Proton Mail: Difference between revisions

Web Client
Repository	github.com/ProtonMail
Written in	TypeScript and Go
License	GNU GPLv3
Website	mail.proton.me; protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion (Accessing link help);

Proton Mail
	Screenshot of the Proton Mail website, showing the conversation view of a message in a user's inbox
Available in	English, Catalan, Chinese, Dutch, French, German, Hungarian, Italian, Japanese, Polish, Romanian, Russian, Spanish, Turkish, Portuguese, Ukrainian
Headquarters	Plan-les-Ouates, Switzerland
Owner	Proton AG
URL	proton.me/mail
Commercial	No
Registration	Required
Users	100 million (April 2023)
Launched	May 16, 2014; 10 years ago
Current status	Online

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Proton Mail (previously written as ProtonMail) is a Swiss end-to-end encrypted email service founded in 2013 headquartered in Plan-les-Ouates, Switzerland.^[7] It uses client-side encryption to protect email content and user data before they are sent to Proton Mail servers, unlike other common email providers such as Gmail and Outlook.com.^[8] The service can be accessed through a webmail client, the Tor network, Windows, macOS and Linux (beta) desktop apps^[9] and iOS and Android apps.^[10]

Proton Mail is run by Proton AG (formerly Proton Technologies), which is based in Plan-les-Ouates, Switzerland.^[1] The company also operates Proton VPN, Proton Drive, Proton Calendar, Proton Pass and Proton Wallet. Proton Mail received initial funding through a crowdfunding campaign. Although the default account setup is free, the service is sustained by optional paid services. Initial membership was by invitation only; however, beginning in March 2016, Proton Mail was opened to the public. Acquiring more than two million users by 2017,^[11] membership grew to almost 70 million by 2022.^[12]

History

On May 16, 2014, Proton Mail entered into public beta.^[13] It was met with enough response that after three days they needed to temporarily suspend beta signups to expand server capacity.^[14] Two months later, Proton Mail received US$550,377 from 10,576 donors through a crowdfunding campaign on Indiegogo, while aiming for US$100,000.^[15] During the campaign, PayPal froze Proton Mail's PayPal account, thereby preventing the withdrawal of US$251,721 worth of donations. PayPal stated that the account was frozen due to doubts of the legality of encryption, statements that opponents said were unfounded.^[16]^[17] The restrictions were lifted the following day.^[18]

On March 18, 2015, Proton Mail received US$2 million from the non-profit Fondation Genevoise pour l'Innovation Technologique (FONGIT) and Charles River Ventures, although by 2022, the company no longer had venture capital investors.^[19]^[20] On August 14, 2015, Proton Mail released major version 2.0, which included a rewritten codebase for its web interface. On 17 March 2016, Proton Mail released major version 3.0, which saw the official launch of Proton Mail out of beta. With a new interface for the web client, version 3.0 also included the public launch of Proton Mail's iOS and Android beta applications.^[21]

On January 19, 2017, Proton Mail announced a Tor onion site.^[22] On November 21, 2017, Proton Mail introduced Proton Mail Contacts, a zero-access encryption contacts manager. Proton Mail Contacts also utilizes digital signatures to verify the integrity of contacts data.^[23] On 6 December 2017, Proton Mail launched Proton Mail Bridge, an application that provides end-to-end email encryption to any desktop client that supports IMAP and SMTP, such as Microsoft Outlook, Mozilla Thunderbird, and Apple Mail, for Windows and MacOS.^[24]

On July 25, 2018, Proton Mail introduced address verification and Pretty Good Privacy (PGP) support, making Proton Mail interoperable with other PGP clients.^[25]

The source code for the back-end remains closed source.^[26]^[27] However, Proton Mail released the source code for the web interface under an open-source license.^[28] Proton Mail also open sourced their mobile clients for iOS and Android,^[29]^[30] as well the Proton Mail Bridge app.^[31]

In September 2020, Proton Mail helped found the Coalition for App Fairness, which aims to gain better conditions for the inclusion of their apps in app stores.^[32] Proton also founded the Coalition for Competitive Digital Markets, which brings together 50+ European tech companies supporting open, interoperable and competitive digital markets.^[33]

In May 2022, Proton AG updated the visuals, user interface, and logos of all its products, including Proton Mail, to achieve a consistent design throughout its software. Proton Mail's subscription now includes access to all Proton VPN, Proton Calendar, Proton Drive and Proton Pass.^[34]

In April 2024, Proton Mail launched a desktop app for Windows and macOS. A version for Linux is in beta.^[9]^[35]^[36] The desktop client is only available for users with a paying subscription, despite Proton AG's earlier comments that it would be "gradually be made available to all users, including free".^[37] The app also allows access to Proton Calendar.^[9]^[38]

In June 2024, Proton started the transition to becoming a non-profit.^[39]

In July 2024, Proton launched Proton Docs, a document editor & Proton Wallet.^[40]^[41]

Services offered

(Launched)

Proton Mail - An email provider (May 16, 2014)^[42]

Proton Calendar - A Calendar

Proton VPN - A Virtual Private Network (2017)

Proton Drive - A cloud Storage (September 22, 2022)^[43]

Proton Pass - A password Manager (June 28, 2023)^[44]

Proton Docs - A Document Editor - (July 3, 2024)^[45]

Proton Wallet - A self-custody wallet (July 24, 2024)^[46]

Encryption

Proton Mail uses a combination of public-key cryptography and symmetric encryption protocols to offer end-to-end encryption. When a user creates a Proton Mail account, their browser generates a pair of public and private RSA keys:

The public key is used to encrypt the user's emails and other user data.
The private key capable of decrypting the user's data is symmetrically encrypted with the user's mailbox password.

This symmetrical encryption happens in the user's web browser using AES-256. Upon account registration, the user is asked to provide a login password for their account.

Proton Mail also offers users an option to log in with a two-password mode that requires a login password and a mailbox password.

The login password is used for authentication.
The mailbox password encrypts the user's mailbox that contains received emails, contacts, and user information as well as a private encryption key.

Upon logging in, the user has to provide both passwords. This is to access the account and the encrypted mailbox and its private encryption key. The decryption takes place client-side either in a web browser or in one of the apps. The public key and the encrypted private key are both stored on Proton Mail servers. Thus Proton Mail stores decryption keys only in their encrypted form so Proton Mail developers are unable to retrieve user emails or reset user mailbox passwords.^[47] This system absolves Proton Mail from:

Storing either the unencrypted data or the mailbox password.
Divulging the contents of past emails but not future emails.
Decrypting the mailbox if requested or compelled by a court order.^[48]

Proton Mail exclusively supports HTTPS and uses TLS with ephemeral key exchange to encrypt all Internet traffic between users and Proton Mail servers.

In September 2015, Proton Mail added native support to their web interface and mobile app for PGP. This allows a user to export their Proton Mail PGP-encoded public key to others outside of Proton Mail, enabling them to use the key for email encryption. The Proton Mail also supports PGP encryption from Proton Mail to outside users.^[49]

Email sending

An email message sent from one Proton Mail account to another is automatically encrypted with the public key of the recipient. Once encrypted, only the private key of the recipient can decrypt the message. When the recipient logs in, their mailbox password decrypts their private key and unlocks their inbox.

Email messages sent from Proton Mail to non-Proton Mail email addresses may optionally be sent in plain text or with end-to-end encryption. With encryption, the message is encrypted with AES under a user-supplied password. The recipient receives a link to the Proton Mail website on which they can enter the password and read the decrypted message. Proton Mail assumes that the sender and the recipient have exchanged this password through a backchannel.^[47] Such email messages can be set to self-destruct after a period of time.^[50]

Masked email

In 2022 ProtonMail acquired SimpleLogin, a company based in Paris, France that provides masked email addresses. SimpleLogin functionality is integrated into Proton Mail, but the masked mail service is also available independently to use with any email provider.^[51]^[52]

Location and security

Both Proton Mail and Proton VPN are located in Switzerland. The company claims that it is also located in Switzerland because of its strict privacy laws.^[53]

As of October 2022 Proton Mail currently supports two-factor authentication with TOTP tokens or U2F security keys, like YubiKeys, for its login process.^[54]^[55]

In 2021 Nadim Kobeissi published an article arguing that as Proton Mail was generally accessed through a web client, "no end-to-end encryption guarantees have ever been provided by the Proton Mail service."^[56]

In 2021, Proton Mail's security and cryptographic architecture were both independently audited by Securitum, a leading European security auditing company, who uncovered no major issues or security vulnerabilities, and the audit results were publicly published.^[57]

Data portability

Proton Mail limits data portability by locking support for external email client software through IMAP and POP3 protocols behind a paywall.

Data centers

Proton Mail maintains four data centers,^[58] one in Lausanne and another in Attinghausen (in the former K7 military bunker under 1,000 meters (3,300 ft) of granite) as a backup.

Each data center uses load balancing across web, mail, and SQL servers, redundant power supply, hard drives with full disk encryption, and exclusive use of Linux and other open-source software. In December 2014, Proton Mail joined the RIPE NCC in an effort to have more direct control over the surrounding Internet infrastructure.^[59]

DDoS attacks

From November 3–7, 2015, Proton Mail was under several DDoS attacks that made the service largely unavailable to users.^[60] During the attacks, the company stated on Twitter that it was looking for a new data center in Switzerland, saying, "many are afraid due to the magnitude of the attack against us".^[61]

In July 2018, Proton Mail reported it was once more suffering from DDoS attacks. CEO Andy Yen claimed that the attackers had been paid by an unknown party to launch the attacks.^[62] In September 2018, one of the suspected Proton Mail attackers was arrested by British law enforcement and charged in connection with a series of other high-profile cyberattacks against schools and airlines.^[63]

Reception

Technological reviews of Proton Mail are generally positive. IT Pro's review scores it 4 out of 5 stars. It lauds the end-to-end encryption of emails, including for non-Proton Mail users, a robust security, and the interfaces of both the web and mobile versions of the email client, with criticisms of the client's search function and the service's price versus the competition.^[64] PCMag also rates the service 4 out of 5 stars, praising the security, in addition to loading embedded images without returning the IP address to senders and setting expirations for messages, but questioning the cap on daily messages even with a subscription.^[65] TechRadar gives the service 4.5 out of 5 stars, calling it one of the best secure email services, although it noted limitations such as that it is not suited for voluminous messaging, the reluctance of websites to adopt the service, and that email subject lines are not encrypted.^[66]

Proton Mail was the recipient of three Lovie Awards, one gold and The People's Lovie in 2016,^[67] and one silver in 2017.^[68]

Blocks

Belarus

On November 15, 2019, Proton confirmed that the government of the Republic of Belarus had issued a block across the country of Proton Mail and Proton VPN IP addresses. The block was no longer in place four days later. No explanation was given to Proton Mail for the block, nor for the block being lifted.^[69]

Russia

On January 29, 2020, the Russian Federal Service for Supervision of Communications, Information Technology and Mass Media reported that it had implemented a complete block of Proton Mail services within the Russian Federation.^[70] As a reason for the block, it cited Proton Mail's refusal to give up information relating to accounts that allegedly sent out spam with terror threats.^[71]^[72] However, Proton Mail claimed that it did not receive any requests from Russian authorities regarding any such accounts.^[73]^[74] In response to the block, the Proton Mail Twitter account recommended legitimate users circumvent the block via VPNs or Tor.

In March 2020, the company announced that even though the Russia ban was not particularly successful, and the service continues to be largely available in Russia without using a VPN, Proton Mail will be releasing new anti-censorship features in both Proton Mail and Proton VPN desktop and mobile apps which will allow more block attempts to be automatically circumvented.^[75]

Compliance with Swiss court orders

According to Proton Mail's transparency report, it is legally obligated to follow Swiss court orders if Swiss law is broken. In 2020, Proton Mail received 3,572 orders from Swiss authorities and contested 750 of them.^[76] Due to the encryption utilized, Proton Mail is unable to hand over the contents of encrypted emails under any circumstances, but according to Proton's privacy policy, Proton Mail can be legally compelled to log IP addresses as part of a Swiss criminal investigation.^[77] For this reason, the company strongly suggests that users who need to hide their identity from the Swiss government use their Tor hidden service/onion site. In May 2022, Proton updated its privacy policy and made explicit a separate privacy policy for its Proton VPN service, which has a different treatment under Swiss law and has a strict no-logs policy which was also confirmed by an external audit.^[78]

Notable cases involving Swiss court orders include a case involving death threats made against immunologist Anthony Fauci and a case against French climate activists.^[79]^[80] After these cases, Proton Mail won an important Swiss court victory in October 2021 that confirmed that email services cannot be considered telecommunications providers, and consequently are not subject to the data retention requirements imposed on telecommunications providers.^[81] In May 2024, Proton was reported having disclosed personal data of a person involved in Catalan independence activism and accused of a felony by the Spanish authorities.^[82]

Account types

As of September 22, 2023, Proton Mail offers the following account types for individuals:^[83]^[84]

Account type	Messages per day	Storage	Aliases	Custom domains	Price	Support
Proton Free	150	1 GB*	1 Address	-	Free	Limited Support
Mail Plus	Unlimited	15 GB	10 Addresses	1	€4.99 /mo or €47.88 /yr or €83.76 /2yr	Priority Support
Proton Unlimited	Unlimited	500 GB	15 Addresses	3	€12.99 /mo or €119.88 /yr or €191.76 /2yr	Priority Support
Proton Family	Unlimited	3 TB	90 Addresses	3	€29.99 /mo or €287.88 /yr or €479.76 /2yr	Priority Support

*The default Proton Mail free storage is 500 MB that users can increase to 1GB if they meet certain criteria.

As of September 22, 2023, Proton Mail offers the following account types for businesses:^[85]

Account type	Storage	Aliases	Custom domains	Price	Hide My Email aliases
Mail Essentials	15 GB	10 Addresses	3	€6.99 /mo	-
Business	500 GB	15 Addresses	10	€10.99 /mo	Unlimited
Enterprise	Customizable	Customizable	Customizable	Customizable	Customizable

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^ "Proton Family plan". Proton. Archived from the original on December 21, 2023. Retrieved December 21, 2023.
^ "Proton for Business plans and pricing". Proton. Archived from the original on February 20, 2023. Retrieved February 20, 2023.

External links

[PrivacyPolicy-1] "Privacy policy". Archived from the original on September 5, 2021. Retrieved May 28, 2022.

[2] Yen (April 18, 2023). "There are now over 100 million Proton Accounts". proton.me. Archived from the original on April 18, 2023. Retrieved December 18, 2023.

[3] "iOS mobile app repository". github.com/ProtonMail/ios-mail. Proton AG. Archived from the original on November 1, 2019. Retrieved May 25, 2024.

[4] "Android mobile app repository". github.com/ProtonMail/android-mail. Proton AG. Archived from the original on May 26, 2024. Retrieved May 25, 2024.

[5] "Proton bridge repository". github.com/ProtonMail/proton-bridge. Proton AG. Archived from the original on April 17, 2020. Retrieved May 25, 2024.

[6] "LICENSE". github.com/ProtonMail/WebClient. Proton AG. December 25, 2021. Archived from the original on December 25, 2021. Retrieved May 25, 2024.

[7] O'Luanaigh, Cian (May 23, 2014). "CERN inspires entrepreneurs for email encryption". CERN. Archived from the original on May 16, 2020. Retrieved May 22, 2020.

[8] Saxena, Kumkum; Rajdev, Dev; Bhatia, Divesh; Bahl, Manav (June 25–27, 2021). "ProtonMail: Advance Encryption and Security". 2021 International Conference on Communication information and Computing Technology (ICCICT). pp. 1–6. doi:10.1109/ICCICT50803.2021.9510041. ISBN 978-1-6654-0430-3. S2CID 237000409.

[:1-9] "Introducing the Proton Mail desktop app". Proton. March 14, 2024. Archived from the original on April 1, 2024. Retrieved April 1, 2024.

[10] "ProtonMail, the Easy-to-Use Encrypted Email Service, Opens Up to the Public". March 17, 2016. Archived from the original on July 2, 2016. Retrieved March 18, 2016.

[11] "Fighting Censorship with Proton Mail Encrypted Email Over Tor". Proton Mail Blog. January 19, 2017. Archived from the original on May 28, 2022. Retrieved January 20, 2017.

[12] Edelman, Gilad (May 25, 2022). "Proton Is Trying to Become Google—Without Your Data". Wired. ISSN 1059-1028. Archived from the original on September 30, 2023. Retrieved May 27, 2022.

[13] "Proton Mail Unveils an Overdue Makeover and New Features". Gizmodo. June 8, 2021. Archived from the original on April 7, 2022. Retrieved July 6, 2021.

[14] "Über-Secure ProtonMail Beta Maxes Out Servers in Just 60 Hours". Infosecurity Magazine. May 22, 2014. Archived from the original on November 7, 2018. Retrieved October 19, 2015.

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[18] Yen, Andy (June 30, 2014). "Paypal Freezes Proton Mail Campaign Funds". Proton Mail Blog. Archived from the original on May 28, 2022. Retrieved October 19, 2015.

[19] "Proton Mail has raised $2M USD". startupticker.ch. March 18, 2015. Archived from the original on June 14, 2022. Retrieved October 19, 2015.

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[21] "Announcement: Proton Mail has launched worldwide!". Proton Mail Blog. March 17, 2016. Archived from the original on May 28, 2022. Retrieved July 21, 2016.

[22] Martin, Alexander J. (January 19, 2017). "Proton Mail launches Tor hidden service to dodge totalitarian censorship". The Register. Archived from the original on January 20, 2017.

[23] "Introducing Proton Mail Contacts – the world's first encrypted contacts manager". Proton Mail Blog. November 21, 2017. Archived from the original on May 28, 2022. Retrieved May 28, 2022.

[24] M., Irina (December 6, 2017). "Introducing Proton Mail Bridge, email encryption for Outlook, Thunderbird, and Apple Mail". Proton Mail Blog. Archived from the original on May 28, 2022. Retrieved December 16, 2017.

[25] "Introducing Address Verification and Full PGP Support - Proton Mail Blog". Proton Mail Blog. July 25, 2018. Archived from the original on May 28, 2022. Retrieved September 28, 2018.

[26] Proton Mail [@Protonmail] (September 25, 2020). "@TheEvanCarroll That is correct. We don't have a stand-alone back-end that can be installed for small deployment, because our backend software is optimized for large deployments with millions of users and distributed infrastructure" (Tweet). Archived from the original on July 10, 2021. Retrieved September 11, 2021 – via Twitter.

[27] "Proton Mail responds on Reddit". April 2, 2019. Archived from the original on November 14, 2020. Retrieved September 24, 2020. We don't plan to open source the back-end code, because it doesn't add trust (users can't verify what code is running on the backend) and doing so would given away information about how we do anti-spam and anti-abuse.

[28] "Proton Mail goes Open Source with version 2.0". Proton Mail Blog. August 13, 2015. Archived from the original on May 28, 2022. Retrieved January 31, 2016.

[29] "Proton Mail iOS app is open source". Proton Mail Blog. October 30, 2019. Archived from the original on May 28, 2022. Retrieved December 12, 2019.

[30] "The Proton Mail Android app is open source". Proton Mail Blog. April 23, 2020. Archived from the original on May 28, 2022. Retrieved April 24, 2020.

[31] "Proton Mail Bridge is open source on macOS, Windows, and Linux". Proton Mail Blog. April 15, 2020. Archived from the original on May 28, 2022. Retrieved April 24, 2020.

[32] Amadeo, Ron (September 24, 2020). "Epic, Spotify, and others take on Apple with "Coalition for App Fairness"". Ars Technica. Archived from the original on September 24, 2020. Retrieved September 26, 2020.

[33] "Coalition for Competitive Digital Markets". Coalition for Competitive Digital Markets. October 21, 2021. Archived from the original on May 29, 2022. Retrieved May 28, 2022.

[34] Khalili, Joel (May 25, 2022). "Proton Mail rebrands as Proton: VPN, email, calendar, cloud storage and password manager now available under one bundle". TechRadar. Archived from the original on June 23, 2022. Retrieved June 23, 2022.

[35] Khalid, Amrita (December 14, 2023). "Proton Mail finally gets a desktop app for encrypted email and calendar". The Verge. Archived from the original on April 1, 2024. Retrieved April 1, 2024.

[36] Sneddon, Joey (March 14, 2024). "Proton Mail's New Desktop App is Available for Linux". OMG! Ubuntu. Archived from the original on April 1, 2024. Retrieved April 1, 2024.

[37] Sawers, Paul (March 14, 2024). "Proton Mail desktop app officially launches, but remains for premium subscribers only". TechCrunch. Archived from the original on April 1, 2024. Retrieved April 1, 2024.

[38] Jawad, Usama (March 14, 2024). "Proton Mail's desktop app is now generally available for Windows and Mac". XDA Developers. Archived from the original on March 17, 2024. Retrieved April 1, 2024.

[39] "Proton is transitioning towards a non-profit structure". Proton. June 17, 2024. Retrieved July 24, 2024.

[40] "Proton just launched a privacy-focused alternative to Google Docs". July 3, 2024.{{cite web}}: CS1 maint: url-status (link)

[41] "Introducing Proton Wallet – a safer way to hold Bitcoin". Proton. July 24, 2024. Retrieved July 24, 2024.

[42] Ropek, Lucas (June 8, 2021). "ProtonMail Unveils an Overdue Makeover and New Features". Gizmodo. Retrieved July 24, 2024.

[43] "We're launching Proton Drive, the encrypted cloud storage for everyone". Proton. September 22, 2022. Retrieved July 24, 2024.

[44] "Introducing Proton Pass – Protecting your passwords and online identity". Proton. June 28, 2023. Retrieved July 30, 2024.

[45] "Introducing Docs in Proton Drive – collaborative document editing that's actually private". Proton. July 3, 2024. Retrieved July 24, 2024.

[46] "Introducing Proton Wallet – a safer way to hold Bitcoin". Proton. July 24, 2024. Retrieved July 24, 2024.

[:0-47] Stockman, Jason (May 22, 2014). "How are Proton Mail keys distributed?". Stack Exchange. Archived from the original on November 15, 2018. Retrieved October 19, 2015.

[48] Khandelwal, Swati (May 26, 2014). "Proton Mail: 'NSA-Proof' End-to-End Encrypted Email Service". The Hacker News. Archived from the original on November 7, 2018. Retrieved October 19, 2015.

[49] Yen, Andy (September 22, 2015). "Proton Mail adds Facebook PGP integration". Proton Mail Blog. Archived from the original on May 28, 2022. Retrieved October 19, 2015.

[50] "Proton Mail Security Details". Proton Mail Security. January 31, 2016. Archived from the original on October 11, 2023. Retrieved January 31, 2016.

[51] "SimpleLogin joins the Proton family". SimpleLogin. April 8, 2022. Archived from the original on December 5, 2023. Retrieved December 14, 2023.

[52] Yen, Andy (November 7, 2022). "Proton and SimpleLogin are joining forces". Proton. Archived from the original on June 17, 2023. Retrieved December 14, 2023. We have been following SimpleLogin closely for a long time as many Proton Mail users utilize it to prevent their Proton Mail addresses from being leaked to spammers

[53] "Why Proton Mail is in Switzerland". Proton. May 19, 2014. Archived from the original on July 6, 2022. Retrieved May 28, 2022.

[54] "Two Factor Authentication (2FA)". Proton Mail Support. Archived from the original on December 3, 2016. Retrieved May 28, 2022.

[55] "Protect your Proton Account with YubiKey and other security keys". Proton Mail Blog. October 13, 2022. Archived from the original on January 19, 2023. Retrieved January 19, 2023.

[56] Kobeissi, Nadim (September 6, 2021). "An Analysis of the ProtonMail Cryptographic Architecture" (PDF). The Cryptology ePrint Archive. Archived (PDF) from the original on November 17, 2022. Retrieved November 2, 2021.

[57] "Securitum Security Report" (PDF). Proton mail blog. Archived from the original (PDF) on July 5, 2021.

[58] "Proton Mail's world-class reliability is now backed by a 99.95% service level agreement (SLA)". Proton. October 18, 2018. Retrieved August 19, 2024.

[59] Yen, Andy (December 17, 2014). "Proton Mail RIPE announcement". Proton Mail Blog. Archived from the original on June 7, 2022. Retrieved July 16, 2021.

[60] Leyden, John (November 5, 2015). "Proton Mail still under attack by DDoS bombardment". The Register. Archived from the original on November 15, 2018. Retrieved November 5, 2015.

[61] @ProtonMail (November 5, 2015). "We are seeking a datacenter in Switzerland brave enough to host ProtonMail, many are afraid due to the magnitude of the attack against us" (Tweet) – via Twitter.

[62] Lynch, Justin (July 2, 2018). "Proton Mail CEO: 'The attacks are continuing'". Fifth Domain. Sightline Media Group. Archived from the original on May 4, 2019. Retrieved July 3, 2018.

[63] "Apophis Squad member responsible for attacks against Proton Mail has been arrested - Proton Mail Blog". Proton Mail Blog. September 6, 2018. Archived from the original on May 4, 2019. Retrieved September 28, 2018.

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[65] Rubenking, Neil J. (December 12, 2022). "ProtonMail - Review". PCMag. Archived from the original on August 12, 2023. Retrieved August 12, 2022.{{cite web}}: CS1 maint: bot: original URL status unknown (link)

[66] Athow, Desire (June 16, 2023). "Proton Mail review". TechRadar. Archived from the original on August 12, 2023. Retrieved August 12, 2023.

[67] "The 6th Annual Lovie Award Winners Announced". The Lovie Awards (Press release). International Academy of Digital Arts and Sciences. September 27, 2016. Archived from the original on August 12, 2023. Retrieved August 12, 2023.

[68] "2017 Winners Gallery". The Lovie Awards. International Academy of Digital Arts and Sciences. 2017. Archived from the original on August 12, 2023. Retrieved August 12, 2023.

[69] "Is Proton Mail blocked in Belarus?". Proton Mail Blog. November 15, 2019. Archived from the original on November 17, 2019. Retrieved September 14, 2022.

[70] Tsydenova, Nadezhda; Ivanova, Polina (January 29, 2020). Heinrich, Mark (ed.). "Russia blocks encrypted email service Proton Mail". Reuters. Archived from the original on January 30, 2020. Retrieved January 30, 2020.

[71] "Почтовый сервис Proton Mail заблокировали в России из-за сообщений о минированиях". www.kommersant.ru (in Russian). January 29, 2020. Archived from the original on January 29, 2020. Retrieved January 29, 2020.

[72] "Russia Blocks Encrypted Swiss Email Service Proton Mail". The Moscow Times. Reuters. January 29, 2020. Archived from the original on January 29, 2020. Retrieved January 29, 2020.

[73] "Proton Mail не получала просьб о помощи в поисках лжеминеров". Interfax.ru (in Russian). Archived from the original on January 29, 2020. Retrieved January 29, 2020.

[74] "Россия не обращалась за информацией о "минерах", заявили в Proton Mail". РИА Новости (in Russian). January 29, 2020. Archived from the original on January 29, 2020. Retrieved January 29, 2020.

[75] "We are rolling out technologies which will help us better overcome attempts to block Proton Mail". Reddit. March 13, 2020. Archived from the original on November 14, 2020. Retrieved March 14, 2020.

[76] "Transparency Report". proton.me. September 10, 2021. Archived from the original on August 25, 2022. Retrieved September 10, 2021.

[77] "Proton Privacy Policy". proton.me. May 25, 2022. Archived from the original on September 5, 2021. Retrieved September 10, 2021.

[78] "Proton VPN Passes Its Latest No-Logs Audit". cnet.com. April 21, 2022. Archived from the original on May 14, 2022. Retrieved May 28, 2022.

[79] Silva, Gioia da (August 3, 2021). "«Wenn du noch einmal das Wort Impfpflicht in den Mund nimmst, schlage ich dir und deiner Frau die Zähne aus»: Der Schweizer Service ProtonMail wird immer wieder für Drohungen missbraucht" ["If you say the word compulsory vaccination again, I'll knock your and your wife's teeth out": The Swiss service Proton Mail is repeatedly misused for threats]. Neue Zürcher Zeitung (in Swiss High German). Archived from the original on May 13, 2024. Retrieved September 10, 2021.

[80] "Important clarifications regarding arrest of climate activist". proton.me. September 6, 2021. Archived from the original on May 28, 2022. Retrieved September 10, 2021.

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@@ Line 7: / Line 7: @@
 | screenshot = ProtonMail screenshot.png
 | caption = Screenshot of the Proton Mail website, showing the conversation view of a message in a user's inbox
-| country = [[Plan-les-Ouates]], [[Switzerland]]<ref>{{cite web | url=https://proton.me/legal/privacy | title=Privacy policy }}</ref>
+| country = [[Plan-les-Ouates]], [[Switzerland]]<ref name="PrivacyPolicy">{{cite web | url=https://proton.me/legal/privacy | title=Privacy policy | access-date=May 28, 2022 | archive-date=September 5, 2021 | archive-url=https://web.archive.org/web/20210905222006/https://protonmail.com/privacy-policy | url-status=live }}</ref>
 | url = {{URL|https://proton.me/mail}}
-| commercial = Yes
+| commercial = No
-| num_users = 100 million (April 2023)<ref name="NumberOfUsers">{{Cite web|url=https://proton.me/blog/proton-100-million-accounts|title=There are now over 100 million Proton Accounts|last=Yen|date=April 18, 2023|website=proton.me|access-date=December 18, 2023|archive-url=https://web.archive.org/web/20230418121406/https://proton.me/blog/proton-100-million-accounts|archive-date=April 18, 2023|url-status=live}}</ref>
+| num_users = 100 million (April 2023)<ref>{{Cite web|url=https://proton.me/blog/proton-100-million-accounts|title=There are now over 100 million Proton Accounts|last=Yen|date=April 18, 2023|website=proton.me|access-date=December 18, 2023|archive-url=https://web.archive.org/web/20230418121406/https://proton.me/blog/proton-100-million-accounts|archive-date=April 18, 2023|url-status=live}}</ref>
 | registration = Required
 | language = [[English language|English]], [[Catalan language|Catalan]], [[Chinese language|Chinese]], [[Dutch language|Dutch]], [[French language|French]], [[German language|German]], [[Hungarian language|Hungarian]], [[Italian language|Italian]], [[Japanese language|Japanese]], [[Polish language|Polish]], [[Romanian language|Romanian]], [[Russian language|Russian]], [[Spanish language|Spanish]], [[Turkish language|Turkish]], [[Portuguese language|Portuguese]], [[Ukrainian language|Ukrainian]]
-| owner = [[Proton (technology company)|Proton AG]]
+| owner = [[Proton AG]]
 | launch_date = {{start date and age|2014|05|16}}
 | current_status = Online
@@ Line 19: / Line 19: @@
 {{Infobox software
 | name = Web Client
+| license = [[GNU General Public License|GNU GPLv3]]<ref>{{cite web |url=https://github.com/ProtonMail/ios-mail |title=iOS mobile app repository |publisher=Proton AG |work=github.com/ProtonMail/ios-mail |access-date=2024-05-25 |archive-date=November 1, 2019 |archive-url=https://web.archive.org/web/20191101014156/https://github.com/ProtonMail/ios-mail |url-status=live }}</ref><ref>{{cite web |title=Android mobile app repository |url=https://github.com/ProtonMail/android-mail |publisher=Proton AG |work=github.com/ProtonMail/android-mail |access-date=2024-05-25 |archive-date=May 26, 2024 |archive-url=https://web.archive.org/web/20240526030333/https://github.com/ProtonMail/android-mail |url-status=live }}</ref><ref>{{cite web |title=Proton bridge repository |url=https://github.com/ProtonMail/proton-bridge |publisher=Proton AG |work=github.com/ProtonMail/proton-bridge |access-date=2024-05-25 |archive-date=April 17, 2020 |archive-url=https://web.archive.org/web/20200417155622/https://github.com/ProtonMail/proton-bridge |url-status=live }}</ref><ref>{{cite web |url=https://github.com/ProtonMail/WebClients/blob/main/LICENSE |title=LICENSE |publisher=Proton AG |work=github.com/ProtonMail/WebClient |date=25 December 2021 |access-date=2024-05-25 |archive-date=December 25, 2021 |archive-url=https://web.archive.org/web/20211225204217/https://github.com/ProtonMail/WebClients/blob/main/LICENSE |url-status=live }}</ref>
-| license = {{Plainlist|
+| programming_language = [[TypeScript]] and [[Go (programming language)|Go]]
-* [[GNU General Public License|GNU GPLv3]]<ref>{{cite web|url=https://github.com/ProtonMail/ios-mail|title=iOS mobile app repository|publisher=Proton AG|work=github.com/ProtonMail/ios-mail|date=11 December 2019}}</ref><ref>{{Cite web|title=Android mobile app repository|url=https://github.com/ProtonMail/proton-mail-android|publisher=Proton A.G.|work=github.com/ProtonMail/proton-mail-android|date=24 April 2020}}</ref><ref>{{cite web|title=Proton bridge repository|access-date=2020-04-24|url=https://github.com/ProtonMail/proton-bridge|publisher=Proton AG|work=github.com/ProtonMail/proton-bridge|date=24 April 2020}}</ref><ref>{{cite web|url=https://github.com/ProtonMail/WebClients/blob/main/LICENSE|title=LICENSE|publisher=Proton AG|work=github.com/ProtonMail/WebClient|date=25 December 2021}}</ref>
-}}
-| programming_language = [[JavaScript]] and [[PHP]]
 | repo = {{URL|https://github.com/ProtonMail}}
+| website = {{ubl|{{URL|https://mail.proton.me}}|{{Onion URL|protonmailrmez3lotcci<wbr>pshtkleegetolb73fuirg<wbr>j7r4o4vfu7ozyd}}}}
-| website = {{plain list|
-* {{URL|https://mail.proton.me}}
-* {{Onion URL|protonmailrmez3lotcci<wbr>pshtkleegetolb73fuirg<wbr>j7r4o4vfu7ozyd}}
-}}
 }}
-'''Proton Mail''' (previously written as '''ProtonMail''') is a Swiss [[End-to-end encryption|end-to-end encrypted]] [[email]] service founded in 2013 headquartered in [[Plan-les-Ouates]], [[Switzerland]].<ref>{{Cite web|url = https://home.cern/news/news/computing/cern-inspires-entrepreneurs-email-encryption|title = CERN inspires entrepreneurs for email encryption|date = 23 May 2014|access-date = 22 May 2020|website = [[CERN]]|last = O'Luanaigh|first = Cian}}</ref> It uses [[client-side encryption]] to protect email content and user data before they are sent to Proton Mail servers, unlike other common email providers such as [[Gmail]] and [[Outlook.com]].<ref>{{Cite book|last1=Saxena|first1=Kumkum|last2=Rajdev|first2=Dev|last3=Bhatia|first3=Divesh|last4=Bahl|first4=Manav|title=2021 International Conference on Communication information and Computing Technology (ICCICT) |chapter=ProtonMail: Advance Encryption and Security |date=25–27 June 2021|pages=1–6 |doi=10.1109/ICCICT50803.2021.9510041|isbn=978-1-6654-0430-3 |s2cid=237000409 }}</ref> The service can be accessed through a [[webmail]] client, the [[Tor (anonymity network)|Tor network]], or dedicated [[iOS]] and [[Android (operating system)|Android]] apps.<ref>{{cite web|url=http://motherboard.vice.com/en_ca/read/protonmail-the-easy-to-use-encrypted-email-service-opens-up-to-the-public|title=ProtonMail, the Easy-to-Use Encrypted Email Service, Opens Up to the Public|date=17 March 2016}}</ref>
+'''Proton Mail''' (previously written as '''ProtonMail''') is a [[Switzerland|Swiss]] [[End-to-end encryption|end-to-end encrypted]] [[email]] service founded in 2013 headquartered in [[Plan-les-Ouates]], [[Switzerland]].<ref>{{Cite web|url = https://home.cern/news/news/computing/cern-inspires-entrepreneurs-email-encryption|title = CERN inspires entrepreneurs for email encryption|date = 23 May 2014|access-date = 22 May 2020|website = [[CERN]]|last = O'Luanaigh|first = Cian|archive-date = May 16, 2020|archive-url = https://web.archive.org/web/20200516183708/https://home.cern/news/news/computing/cern-inspires-entrepreneurs-email-encryption|url-status = live}}</ref> It uses [[client-side encryption]] to protect email content and user data before they are sent to Proton Mail servers, unlike other common email providers such as [[Gmail]] and [[Outlook.com]].<ref>{{Cite book|last1=Saxena|first1=Kumkum|last2=Rajdev|first2=Dev|last3=Bhatia|first3=Divesh|last4=Bahl|first4=Manav|title=2021 International Conference on Communication information and Computing Technology (ICCICT) |chapter=ProtonMail: Advance Encryption and Security |date=25–27 June 2021|pages=1–6 |doi=10.1109/ICCICT50803.2021.9510041|isbn=978-1-6654-0430-3 |s2cid=237000409}}</ref> The service can be accessed through a [[webmail]] client, the [[Tor (anonymity network)|Tor network]], [[Microsoft Windows|Windows]], [[macOS]] and [[Linux]] (beta) desktop apps<ref name=":1">{{Cite web |date=2024-03-14 |title=Introducing the Proton Mail desktop app |url=https://proton.me/blog/proton-mail-desktop-app |access-date=2024-04-01 |website=Proton |language=en |archive-date=April 1, 2024 |archive-url=https://web.archive.org/web/20240401234533/https://proton.me/blog/proton-mail-desktop-app |url-status=live }}</ref> and [[iOS]] and [[Android (operating system)|Android]] apps.<ref>{{cite web|url=http://motherboard.vice.com/en_ca/read/protonmail-the-easy-to-use-encrypted-email-service-opens-up-to-the-public|title=ProtonMail, the Easy-to-Use Encrypted Email Service, Opens Up to the Public|date=17 March 2016|access-date=March 18, 2016|archive-date=July 2, 2016|archive-url=https://web.archive.org/web/20160702081550/http://motherboard.vice.com/en_ca/read/protonmail-the-easy-to-use-encrypted-email-service-opens-up-to-the-public|url-status=live}}</ref>
-Proton Mail is run by [[Proton AG]] (formerly Proton Technologies), which is based in [[Plan-les-Ouates]], [[Switzerland]].<ref>{{cite web | url=https://proton.me/legal/privacy | title=Privacy policy }}</ref> The company also operates [[Proton VPN]], Proton Drive and [[Proton Calendar]]. Proton Mail received initial funding through a [[crowdfunding]] campaign. Although the default account setup is free, the service is sustained by optional paid services. Initial membership was by invitation only; however, beginning in March 2016, Proton Mail was opened to the public. Acquiring more than 2 million users by 2017,<ref>{{Cite web|url=https://proton.me/news/tor-encrypted-email|title=Fighting Censorship with Proton Mail Encrypted Email Over Tor|date=19 January 2017|website=Proton Mail Blog|access-date=20 January 2017}}</ref> membership grew to almost 70 million by 2022.<ref>{{Cite magazine |last=Edelman |first=Gilad |date=25 May 2022 |title=Proton Is Trying to Become Google—Without Your Data |language=en-US |magazine=Wired |url=https://www.wired.com/story/proton-mail-calendar-drive-vpn/ |access-date=2022-05-27 |issn=1059-1028}}</ref>
+Proton Mail is run by [[Proton AG]] (formerly Proton Technologies), which is based in [[Plan-les-Ouates]], [[Switzerland]].<ref name="PrivacyPolicy" /> The company also operates [[Proton VPN]], Proton Drive, [[Proton Calendar]],  Proton Pass and Proton Wallet. Proton Mail received initial funding through a [[crowdfunding]] campaign. Although the default account setup is free, the service is sustained by optional paid services. Initial membership was by invitation only; however, beginning in March 2016, Proton Mail was opened to the public. Acquiring more than two million users by 2017,<ref>{{Cite web|url=https://proton.me/news/tor-encrypted-email|title=Fighting Censorship with Proton Mail Encrypted Email Over Tor|date=19 January 2017|website=Proton Mail Blog|access-date=20 January 2017|archive-date=May 28, 2022|archive-url=https://web.archive.org/web/20220528174448/https://proton.me/news/tor-encrypted-email|url-status=live}}</ref> membership grew to almost 70 million by 2022.<ref>{{Cite magazine |last=Edelman |first=Gilad |date=25 May 2022 |title=Proton Is Trying to Become Google—Without Your Data |language=en-US |magazine=Wired |url=https://www.wired.com/story/proton-mail-calendar-drive-vpn/ |access-date=2022-05-27 |issn=1059-1028 |archive-date=September 30, 2023 |archive-url=https://web.archive.org/web/20230930162549/https://www.wired.com/story/proton-mail-calendar-drive-vpn/ |url-status=live }}</ref>
 == History ==
-On May 16, 2014, Proton Mail entered into [[public beta]].<ref>{{Cite web |date=8 June 2021 |title=Proton Mail Unveils an Overdue Makeover and New Features |url=https://gizmodo.com/protonmail-unveils-an-overdue-makeover-and-new-features-1847054759 |access-date=2021-07-06 |website=Gizmodo |language=en-us}}</ref> It was met with enough response that after three days they needed to temporarily suspend beta signups to expand server capacity.<ref>{{Cite web|url=https://www.infosecurity-magazine.com/news/uber-secure-protonmail-beta-maxes-out-servers-in/|title=Über-Secure ProtonMail Beta Maxes Out Servers in Just 60 Hours|date=22 May 2014|website=Infosecurity Magazine|access-date=19 October 2015}}</ref> Two months later, Proton Mail received {{US$|550377}} from 10,576 donors through a crowdfunding campaign on [[Indiegogo]], while aiming for {{US$|100000}}.<ref>{{Cite web |last=Yen |first=Andy |date=31 July 2014 |title=Proton Mail |url=https://www.indiegogo.com/projects/protonmail/#/ |access-date=19 October 2014 |website=[[Indiegogo]]}}</ref> During the campaign, [[PayPal]] froze Proton Mail's PayPal account, thereby preventing the withdrawal of {{US$|251721}} worth of donations. PayPal stated that the account was frozen due to doubts of the legality of encryption, statements that opponents said were unfounded.<ref>{{Cite web|url=https://www.bit-tech.net/news/tech/software/protonmail-paypal/1/|title=ProtonMail hit by PayPal account freeze|last=Halfacree|first=Gareth|date=1 July 2014|website=bit-tech|access-date=19 October 2015}}</ref><ref>{{Cite web |last=Howell O'Neill |first=Patrick |date=1 July 2014 |title=PayPal freezes account of email encryption startup Proton Mail [Update] |url=https://www.dailydot.com/layer8/paypal-protonmail-freeze/ |access-date=19 October 2015 |website=[[The Daily Dot]]}}</ref> The restrictions were lifted the following day.<ref>{{Cite web |last=Yen |first=Andy |date=30 June 2014 |title=Paypal Freezes Proton Mail Campaign Funds |url=https://proton.me/news/paypal-freezes-protonmail-campaign-funds |access-date=19 October 2015 |website=Proton Mail Blog}}</ref>
+On May 16, 2014, Proton Mail entered into [[public beta]].<ref>{{Cite web |date=8 June 2021 |title=Proton Mail Unveils an Overdue Makeover and New Features |url=https://gizmodo.com/protonmail-unveils-an-overdue-makeover-and-new-features-1847054759 |access-date=2021-07-06 |website=Gizmodo |language=en-us |archive-date=April 7, 2022 |archive-url=https://web.archive.org/web/20220407210725/https://gizmodo.com/protonmail-unveils-an-overdue-makeover-and-new-features-1847054759 |url-status=live }}</ref> It was met with enough response that after three days they needed to temporarily suspend beta signups to expand server capacity.<ref>{{Cite web|url=https://www.infosecurity-magazine.com/news/uber-secure-protonmail-beta-maxes-out-servers-in/|title=Über-Secure ProtonMail Beta Maxes Out Servers in Just 60 Hours|date=22 May 2014|website=Infosecurity Magazine|access-date=19 October 2015|archive-date=November 7, 2018|archive-url=https://web.archive.org/web/20181107132843/https://www.infosecurity-magazine.com/news/uber-secure-protonmail-beta-maxes-out-servers-in/|url-status=live}}</ref> Two months later, Proton Mail received {{US$|550377}} from 10,576 donors through a crowdfunding campaign on [[Indiegogo]], while aiming for {{US$|100000}}.<ref>{{Cite web |date=29 July 2014 |title=Proton Mail raises a record $500,000 through crowdfunding to disrupt the state of email communications |url=https://proton.me/blog/protonmail-raises-a-record-500000-through-crowdfunding-to-disrupt-the-state-of-email-communications |url-status=live |archive-url=https://web.archive.org/web/20231203104037/https://proton.me/blog/protonmail-raises-a-record-500000-through-crowdfunding-to-disrupt-the-state-of-email-communications |archive-date=3 December 2023 |access-date=13 May 2024 |website=Proton |language=en |quote=Proton Mail’s crowdfunding campaign has surged past $500,000 with the support of over 10,000 backers}}</ref> During the campaign, [[PayPal]] froze Proton Mail's PayPal account, thereby preventing the withdrawal of {{US$|251721}} worth of donations. PayPal stated that the account was frozen due to doubts of the legality of encryption, statements that opponents said were unfounded.<ref>{{Cite web|url=https://www.bit-tech.net/news/tech/software/protonmail-paypal/1/|title=ProtonMail hit by PayPal account freeze|last=Halfacree|first=Gareth|date=1 July 2014|website=bit-tech|access-date=19 October 2015|archive-date=November 20, 2018|archive-url=https://web.archive.org/web/20181120045408/https://bit-tech.net/news/tech/software/protonmail-paypal/1/|url-status=live}}</ref><ref>{{Cite web |last=Howell O'Neill |first=Patrick |date=1 July 2014 |title=PayPal freezes account of email encryption startup Proton Mail [Update] |url=https://www.dailydot.com/layer8/paypal-protonmail-freeze/ |access-date=19 October 2015 |website=[[The Daily Dot]] |archive-date=June 18, 2019 |archive-url=https://web.archive.org/web/20190618155918/https://www.dailydot.com/layer8/paypal-protonmail-freeze/ |url-status=live }}</ref> The restrictions were lifted the following day.<ref>{{Cite web |last=Yen |first=Andy |date=30 June 2014 |title=Paypal Freezes Proton Mail Campaign Funds |url=https://proton.me/news/paypal-freezes-protonmail-campaign-funds |access-date=19 October 2015 |website=Proton Mail Blog |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174444/https://proton.me/news/paypal-freezes-protonmail-campaign-funds |url-status=live }}</ref>
+On March 18, 2015, Proton Mail received {{US$|2 million}} from the non-profit ''Fondation Genevoise pour l'Innovation Technologique'' (FONGIT) and [[Charles River Ventures]], although by 2022, the company no longer had venture capital investors.<ref>{{Cite web |date=18 March 2015 |title=Proton Mail has raised $2M USD |url=https://www.startupticker.ch/en/news/march-2015/protonmail-has-raised-2m-usd |access-date=19 October 2015 |website=startupticker.ch |archive-date=June 14, 2022 |archive-url=https://web.archive.org/web/20220614001116/https://www.startupticker.ch/en/news/march-2015/protonmail-has-raised-2m-usd |url-status=live }}</ref><ref>{{Cite web|url=https://proton.me/about/team|title=Meet the Proton team|date=25 May 2022|website=Proton|access-date=28 May 2022|archive-date=October 10, 2023|archive-url=https://web.archive.org/web/20231010031004/https://proton.me/about/team|url-status=live}}</ref> On August 14, 2015, Proton Mail released major version 2.0, which included a rewritten [[codebase]] for its web interface. On 17 March 2016, Proton Mail released major version 3.0, which saw the official launch of Proton Mail out of beta. With a new interface for the web client, version 3.0 also included the public launch of Proton Mail's iOS and Android beta applications.<ref>{{Cite web |date=17 March 2016 |title=Announcement: Proton Mail has launched worldwide! |url=https://proton.me/news/protonmail-launch-worldwide |access-date=21 July 2016 |website=Proton Mail Blog |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174441/https://proton.me/news/protonmail-launch-worldwide |url-status=live }}</ref>
+On January 19, 2017, Proton Mail announced a [[Tor (anonymity network)|Tor]] onion site.<ref>{{cite web |last=Martin |first=Alexander J. |date=19 January 2017 |title=Proton Mail launches Tor hidden service to dodge totalitarian censorship |url=https://www.theregister.co.uk/2017/01/19/protonmail_launches_tor_hidden_service/ |url-status=dead |archive-url=https://web.archive.org/web/20170120080052/http://www.theregister.co.uk/2017/01/19/protonmail_launches_tor_hidden_service/ |archive-date=20 January 2017 |website=[[The Register]]}}</ref> On November 21, 2017, Proton Mail introduced Proton Mail Contacts, a zero-access encryption contacts manager. Proton Mail Contacts also utilizes [[digital signature]]s to verify the integrity of contacts data.<ref>{{cite web |date=21 November 2017 |title=Introducing Proton Mail Contacts – the world's first encrypted contacts manager |url=https://proton.me/news/encrypted-contacts-manager |website=Proton Mail Blog |access-date=May 28, 2022 |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174437/https://proton.me/news/encrypted-contacts-manager |url-status=live }}</ref> On 6 December 2017, Proton Mail launched Proton Mail Bridge, an application that provides end-to-end email encryption to any desktop client that supports [[IMAP]] and [[SMTP]], such as [[Microsoft Outlook]], [[Mozilla Thunderbird]], and [[Apple Mail]], for Windows and MacOS.<ref>{{Cite web|url=https://proton.me/news/thunderbird-outlook-encrypted-email|title=Introducing Proton Mail Bridge, email encryption for Outlook, Thunderbird, and Apple Mail|last=M.|first=Irina|date=6 December 2017|work=Proton Mail Blog|access-date=16 December 2017|archive-date=May 28, 2022|archive-url=https://web.archive.org/web/20220528174440/https://proton.me/news/thunderbird-outlook-encrypted-email|url-status=live}}</ref>
+On July 25, 2018, Proton Mail introduced address verification and [[Pretty Good Privacy]] (PGP) support, making Proton Mail interoperable with other PGP clients.<ref>{{Cite news |date=25 July 2018 |title=Introducing Address Verification and Full PGP Support - Proton Mail Blog |language=en-US |work=Proton Mail Blog |url=https://proton.me/news/address-verification-pgp-support |access-date=28 September 2018 |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174442/https://proton.me/news/address-verification-pgp-support |url-status=live }}</ref>
+The source code for the back-end remains closed source.<ref>{{cite tweet|number=1309380464118030342|user=Protonmail|title=@TheEvanCarroll That is correct. We don't have a stand-alone back-end that can be installed for small deployment, because our backend software is optimized for large deployments with millions of users and distributed infrastructure.|author=Proton Mail|author-link=ProtonMail|date=25 September 2020|access-date=11 September 2021|language=en|archive-url=https://web.archive.org/web/20210710030151/https://twitter.com/ProtonMail/status/1309380464118030342|archive-date=10 July 2021|url-status=live}}</ref><ref>{{Cite web |date=2 April 2019 |title=Proton Mail responds on Reddit |url=https://www.reddit.com/r/ProtonMail/comments/b847n7/it_has_been_7_months_since_protonmail_said_we_are/ejysilb/ |quote=We don't plan to open source the back-end code, because it doesn't add trust (users can't verify what code is running on the backend) and doing so would given away information about how we do anti-spam and anti-abuse. |access-date=September 24, 2020 |archive-date=November 14, 2020 |archive-url=https://web.archive.org/web/20201114071230/https://www.reddit.com/r/ProtonMail/comments/b847n7/it_has_been_7_months_since_protonmail_said_we_are/ejysilb/ |url-status=live }}</ref> However, Proton Mail released the source code for the web interface under an [[open-source license]].<ref>{{Cite web |date=13 August 2015 |title=Proton Mail goes Open Source with version 2.0 |url=https://proton.me/news/protonmail-secure-email-open-source |access-date=31 January 2016 |website=Proton Mail Blog |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174439/https://proton.me/news/protonmail-secure-email-open-source |url-status=live }}</ref> Proton Mail also open sourced their mobile clients for iOS and Android,<ref>{{Cite web |date=2019-10-30 |title=Proton Mail iOS app is open source |url=https://proton.me/news/ios-open-source |access-date=2019-12-12 |website=Proton Mail Blog |language=en-US |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174450/https://proton.me/news/ios-open-source |url-status=live }}</ref><ref>{{Cite web |date=2020-04-23 |title=The Proton Mail Android app is open source |url=https://proton.me/news/android-open-source |access-date=2020-04-24 |website=Proton Mail Blog |language=en-US |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174434/https://proton.me/news/android-open-source |url-status=live }}</ref> as well the Proton Mail Bridge app.<ref>{{Cite web |date=2020-04-15 |title=Proton Mail Bridge is open source on macOS, Windows, and Linux |url=https://proton.me/news/bridge-open-source |access-date=2020-04-24 |website=Proton Mail Blog |language=en-US |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174438/https://proton.me/news/bridge-open-source |url-status=live }}</ref>
+In September 2020, Proton Mail helped found the [[Coalition for App Fairness]], which aims to gain better conditions for the inclusion of their apps in app stores.<ref>{{Cite web|last=Amadeo|first=Ron|date=2020-09-24|title=Epic, Spotify, and others take on Apple with "Coalition for App Fairness"|url=https://arstechnica.com/gadgets/2020/09/epic-spotify-and-others-take-on-apple-with-coalition-for-app-fairness/|access-date=2020-09-26|website=Ars Technica|language=en-us|archive-date=September 24, 2020|archive-url=https://web.archive.org/web/20200924195429/https://arstechnica.com/gadgets/2020/09/epic-spotify-and-others-take-on-apple-with-coalition-for-app-fairness/|url-status=live}}</ref> Proton also founded the Coalition for Competitive Digital Markets, which brings together 50+ European tech companies supporting open, interoperable and competitive digital markets.<ref>{{Cite web|url=https://competitivedigitalmarkets.eu/|title=Coalition for Competitive Digital Markets|date=2021-10-21|website=Coalition for Competitive Digital Markets|language=en-US|access-date=2022-05-28|archive-date=May 29, 2022|archive-url=https://web.archive.org/web/20220529092055/https://competitivedigitalmarkets.eu/|url-status=live}}</ref>
+In May 2022, Proton AG updated the visuals, user interface, and logos of all its products, including Proton Mail, to achieve a consistent design throughout its software. Proton Mail's subscription now includes access to all [[Proton VPN]], [[Proton Calendar]], [[Proton Drive]] and [[Proton Pass]].<ref>{{cite web |last1=Khalili |first1=Joel |title=Proton Mail rebrands as Proton: VPN, email, calendar, cloud storage and password manager now available under one bundle |url=https://www.techradar.com/news/protonmail-rebrands-as-proton-vpn-email-and-cloud-storage-now-available-under-one-bundle |access-date=23 June 2022 |website=TechRadar |date=25 May 2022 |archive-date=June 23, 2022 |archive-url=https://web.archive.org/web/20220623204202/https://www.techradar.com/news/protonmail-rebrands-as-proton-vpn-email-and-cloud-storage-now-available-under-one-bundle |url-status=live }}</ref>
+In April 2024, Proton Mail launched a desktop app for Windows and macOS. A version for [[Linux]] is in beta.<ref name=":1" /><ref>{{Cite web |last=Khalid |first=Amrita |date=2023-12-14 |title=Proton Mail finally gets a desktop app for encrypted email and calendar |url=https://www.theverge.com/2023/12/14/24000696/proton-mail-desktop-app-mac-windows-encrypted |access-date=2024-04-01 |website=The Verge |language=en |archive-date=April 1, 2024 |archive-url=https://web.archive.org/web/20240401234532/https://www.theverge.com/2023/12/14/24000696/proton-mail-desktop-app-mac-windows-encrypted |url-status=live }}</ref><ref>{{Cite web |last=Sneddon |first=Joey |date=2024-03-14 |title=Proton Mail's New Desktop App is Available for Linux |url=https://www.omgubuntu.co.uk/2024/03/proton-mail-desktop-app-linux |access-date=2024-04-01 |website=OMG! Ubuntu |language=en-GB |archive-date=April 1, 2024 |archive-url=https://web.archive.org/web/20240401234531/https://www.omgubuntu.co.uk/2024/03/proton-mail-desktop-app-linux |url-status=live }}</ref> The desktop client is only available for users with a paying subscription, despite Proton AG's earlier comments that it would be "gradually be made available to all users, including ''free''".<ref>{{Cite web |last=Sawers |first=Paul |date=2024-03-14 |title=Proton Mail desktop app officially launches, but remains for premium subscribers only |url=https://techcrunch.com/2024/03/14/proton-mail-desktop-mac-windows-linux-premium-paying-users/ |access-date=2024-04-01 |website=TechCrunch |language=en-US |archive-date=April 1, 2024 |archive-url=https://web.archive.org/web/20240401234531/https://techcrunch.com/2024/03/14/proton-mail-desktop-mac-windows-linux-premium-paying-users/ |url-status=live }}</ref> The app also allows access to Proton Calendar.<ref name=":1" /><ref>{{Cite web |last=Jawad |first=Usama |date=2024-03-14 |title=Proton Mail's desktop app is now generally available for Windows and Mac |url=https://www.xda-developers.com/proton-mails-desktop-available-windows-mac/ |access-date=2024-04-01 |website=XDA Developers |language=en |archive-date=March 17, 2024 |archive-url=https://web.archive.org/web/20240317041046/https://www.xda-developers.com/proton-mails-desktop-available-windows-mac/ |url-status=live }}</ref>
+In June 2024, Proton started the transition to becoming a non-profit.<ref>{{Cite web |date=2024-06-17 |title=Proton is transitioning towards a non-profit structure |url=https://proton.me/blog/proton-non-profit-foundation |access-date=2024-07-24 |website=Proton |language=en}}</ref>
+In July 2024, Proton launched Proton Docs, a document editor & Proton Wallet.<ref>{{Cite web |date=2024-07-03 |title=Proton just launched a privacy-focused alternative to Google Docs |url=https://www.theverge.com/2024/7/3/24190732/proton-docs-document-editor-privacy-google |url-status=live }}</ref><ref>{{Cite web |date=2024-07-24 |title=Introducing Proton Wallet – a safer way to hold Bitcoin |url=https://proton.me/blog/proton-wallet-launch |access-date=2024-07-24 |website=Proton |language=en}}</ref>
+== Services offered ==
+(Launched)
+'''Proton Mail''' - An email provider (May 16, 2014)<ref>{{Cite web |last=Ropek |first=Lucas |date=2021-06-08 |title=ProtonMail Unveils an Overdue Makeover and New Features |url=https://gizmodo.com/protonmail-unveils-an-overdue-makeover-and-new-features-1847054759 |access-date=2024-07-24 |website=Gizmodo |language=en-US}}</ref>
+'''Proton Calendar''' - A Calendar
-On March 18, 2015, Proton Mail received {{US$|2 million}} from the non-profit ''Fondation Genevoise pour l'Innovation Technologique'' (FONGIT) and [[Charles River Ventures]], although by 2022, the company no longer had venture capital investors.<ref>{{Cite web |date=18 March 2015 |title=Proton Mail has raised $2M USD |url=https://www.startupticker.ch/en/news/march-2015/protonmail-has-raised-2m-usd |access-date=19 October 2015 |website=startupticker.ch}}</ref><ref>{{Cite web|url=https://proton.me/about/team|title=Meet the Proton team|date=25 May 2022|website=Proton|access-date=28 May 2022}}</ref> On 14 August 2015, Proton Mail released major version 2.0, which included a rewritten [[codebase]] for its web interface. On 17 March 2016, Proton Mail released major version 3.0, which saw the official launch of Proton Mail out of beta. With a new interface for the web client, version 3.0 also included the public launch of Proton Mail's iOS and Android beta applications.<ref>{{Cite web |date=17 March 2016 |title=Announcement: Proton Mail has launched worldwide! |url=https://proton.me/news/protonmail-launch-worldwide |access-date=21 July 2016 |website=Proton Mail Blog}}</ref>
+'''Proton VPN''' - A Virtual Private Network (2017)
-On January 19, 2017, Proton Mail announced a [[Tor (anonymity network)|Tor]] onion site.<ref>{{cite web |last=Martin |first=Alexander J. |date=19 January 2017 |title=Proton Mail launches Tor hidden service to dodge totalitarian censorship |url=https://www.theregister.co.uk/2017/01/19/protonmail_launches_tor_hidden_service/ |url-status=dead |archive-url=https://web.archive.org/web/20170120080052/http://www.theregister.co.uk/2017/01/19/protonmail_launches_tor_hidden_service/ |archive-date=20 January 2017 |website=[[The Register]]}}</ref> On November 21, 2017, Proton Mail introduced Proton Mail Contacts, a zero-access encryption contacts manager. Proton Mail Contacts also utilizes [[digital signature]]s to verify the integrity of contacts data.<ref>{{cite web |date=21 November 2017 |title=Introducing Proton Mail Contacts – the world's first encrypted contacts manager |url=https://proton.me/news/encrypted-contacts-manager |website=Proton Mail Blog}}</ref> On 6 December 2017, Proton Mail launched Proton Mail Bridge, an application that provides end-to-end email encryption to any desktop client that supports [[IMAP]] and [[SMTP]], such as [[Microsoft Outlook]], [[Mozilla Thunderbird]], and [[Apple Mail]], for [[Windows]] and [[MacOS]].<ref>{{Cite web|url=https://proton.me/news/thunderbird-outlook-encrypted-email|title=Introducing Proton Mail Bridge, email encryption for Outlook, Thunderbird, and Apple Mail|last=M.|first=Irina|date=6 December 2017|work=Proton Mail Blog|access-date=16 December 2017}}</ref>
-On July 25, 2018, Proton Mail introduced address verification and [[Pretty Good Privacy]] (PGP) support, making Proton Mail interoperable with other PGP clients.<ref>{{Cite news |date=25 July 2018 |title=Introducing Address Verification and Full PGP Support - Proton Mail Blog |language=en-US |work=Proton Mail Blog |url=https://proton.me/news/address-verification-pgp-support |access-date=28 September 2018}}</ref>
+'''Proton Drive''' - A cloud Storage (September 22, 2022)<ref>{{Cite web |date=2022-09-22 |title=We’re launching Proton Drive, the encrypted cloud storage for everyone |url=https://proton.me/blog/proton-drive-launch |access-date=2024-07-24 |website=Proton |language=en}}</ref>
+'''Proton Pass''' - A password Manager (June 28, 2023)<ref>{{Cite web |date=2023-06-28 |title=Introducing Proton Pass – Protecting your passwords and online identity |url=https://proton.me/blog/proton-pass-launch |access-date=2024-07-30 |website=Proton |language=en}}</ref>
-The source code for the back-end remains closed source.<ref>{{cite tweet|number=1309380464118030342|user=Protonmail|title=@TheEvanCarroll That is correct. We don't have a stand-alone back-end that can be installed for small deployment, because our backend software is optimized for large deployments with millions of users and distributed infrastructure.|author=Proton Mail|author-link=ProtonMail|date=25 September 2020|access-date=11 September 2021|language=en|archive-url=https://web.archive.org/web/20210710030151/https://twitter.com/ProtonMail/status/1309380464118030342|archive-date=10 July 2021|url-status=live}}</ref><ref>{{Cite web |date=2 April 2019 |title=Proton Mail responds on Reddit |url=https://www.reddit.com/r/ProtonMail/comments/b847n7/it_has_been_7_months_since_protonmail_said_we_are/ejysilb/ |quote=We don't plan to open source the back-end code, because it doesn't add trust (users can't verify what code is running on the backend) and doing so would given away information about how we do anti-spam and anti-abuse.}}</ref> However, Proton Mail released the source code for the web interface under an [[open-source license]].<ref>{{Cite web |date=13 August 2015 |title=Proton Mail goes Open Source with version 2.0 |url=https://proton.me/news/protonmail-secure-email-open-source |access-date=31 January 2016 |website=Proton Mail Blog}}</ref> Proton Mail also open sourced their mobile clients for iOS and Android,<ref>{{Cite web |date=2019-10-30 |title=Proton Mail iOS app is open source |url=https://proton.me/news/ios-open-source |access-date=2019-12-12 |website=Proton Mail Blog |language=en-US}}</ref><ref>{{Cite web |date=2020-04-23 |title=The Proton Mail Android app is open source |url=https://proton.me/news/android-open-source |access-date=2020-04-24 |website=Proton Mail Blog |language=en-US}}</ref> as well the Proton Mail Bridge app.<ref>{{Cite web |date=2020-04-15 |title=Proton Mail Bridge is open source on macOS, Windows, and Linux |url=https://proton.me/news/bridge-open-source |access-date=2020-04-24 |website=Proton Mail Blog |language=en-US}}</ref>
+'''Proton Docs''' - A Document Editor - (July 3, 2024)<ref>{{Cite web |date=2024-07-03 |title=Introducing Docs in Proton Drive – collaborative document editing that’s actually private |url=https://proton.me/blog/docs-proton-drive |access-date=2024-07-24 |website=Proton |language=en}}</ref>
-In September 2020, Proton Mail helped found the [[Coalition for App Fairness]], which aims to gain better conditions for the inclusion of their apps in app stores.<ref>{{Cite web|last=Amadeo|first=Ron|date=2020-09-24|title=Epic, Spotify, and others take on Apple with "Coalition for App Fairness"|url=https://arstechnica.com/gadgets/2020/09/epic-spotify-and-others-take-on-apple-with-coalition-for-app-fairness/|access-date=2020-09-26|website=Ars Technica|language=en-us}}</ref> Proton also founded the Coalition for Competitive Digital Markets, which brings together 50+ European tech companies supporting open, interoperable and competitive digital markets.<ref>{{Cite web|url=https://competitivedigitalmarkets.eu/|title=Coalition for Competitive Digital Markets|date=2021-10-21|website=Coalition for Competitive Digital Markets|language=en-US|access-date=2022-05-28}}</ref>
+'''Proton Wallet''' - A self-custody wallet (July 24, 2024)<ref>{{Cite web |date=2024-07-24 |title=Introducing Proton Wallet – a safer way to hold Bitcoin |url=https://proton.me/blog/proton-wallet-launch |access-date=2024-07-24 |website=Proton |language=en}}</ref>
-In May 2022, Proton AG updated the visuals, user interface, and logos of all its products, including Proton Mail, to achieve a consistent design throughout its software. Proton Mail's subscription now includes access to all [[Proton VPN]], [[Proton Calendar]], [[Proton Drive]] and [[Proton Pass]].<ref>{{cite web |last1=Khalili |first1=Joel |title=Proton Mail rebrands as Proton: VPN, email, calendar, cloud storage and password manager now available under one bundle |url=https://www.techradar.com/news/protonmail-rebrands-as-proton-vpn-email-and-cloud-storage-now-available-under-one-bundle |access-date=23 June 2022 |website=TechRadar|date=25 May 2022 }}</ref>
 == Encryption ==
@@ Line 60: / Line 78: @@
 * The mailbox password encrypts the user's mailbox that contains received emails, contacts, and user information as well as a private encryption key.
-Upon logging in, the user has to provide both passwords. This is to access the account and the encrypted mailbox and its private encryption key. The decryption takes place client-side either in a web browser or in one of the apps. The public key and the encrypted private key are both stored on Proton Mail servers. Thus Proton Mail stores decryption keys only in their encrypted form so Proton Mail developers are unable to retrieve user emails or reset user mailbox passwords.<ref name=":0">{{Cite web |last=Stockman |first=Jason |date=22 May 2014 |title=How are Proton Mail keys distributed? |url=https://security.stackexchange.com/questions/58541/how-are-protonmail-keys-distributed/58552#58552 |access-date=19 October 2015 |website=[[Stack Exchange]]}}</ref> This system absolves Proton Mail from:
+Upon logging in, the user has to provide both passwords. This is to access the account and the encrypted mailbox and its private encryption key. The decryption takes place client-side either in a web browser or in one of the apps. The public key and the encrypted private key are both stored on Proton Mail servers. Thus Proton Mail stores decryption keys only in their encrypted form so Proton Mail developers are unable to retrieve user emails or reset user mailbox passwords.<ref name=":0">{{Cite web |last=Stockman |first=Jason |date=22 May 2014 |title=How are Proton Mail keys distributed? |url=https://security.stackexchange.com/questions/58541/how-are-protonmail-keys-distributed/58552#58552 |access-date=19 October 2015 |website=[[Stack Exchange]] |archive-date=November 15, 2018 |archive-url=https://web.archive.org/web/20181115235022/https://security.stackexchange.com/questions/58541/how-are-protonmail-keys-distributed/58552#58552 |url-status=live }}</ref> This system absolves Proton Mail from:
 * Storing either the unencrypted data or the mailbox password.
 * Divulging the contents of past emails but not future emails.
-* Decrypting the mailbox if requested or compelled by a court order.<ref>{{Cite web |last=Khandelwal |first=Swati |date=26 May 2014 |title=Proton Mail: 'NSA-Proof' End-to-End Encrypted Email Service |url=https://thehackernews.com/2014/05/protonmail-nsa-proof-end-to-end.html |access-date=19 October 2015 |website=The Hacker News}}</ref>
+* Decrypting the mailbox if requested or compelled by a court order.<ref>{{Cite web |last=Khandelwal |first=Swati |date=26 May 2014 |title=Proton Mail: 'NSA-Proof' End-to-End Encrypted Email Service |url=https://thehackernews.com/2014/05/protonmail-nsa-proof-end-to-end.html |access-date=19 October 2015 |website=The Hacker News |archive-date=November 7, 2018 |archive-url=https://web.archive.org/web/20181107110740/https://thehackernews.com/2014/05/protonmail-nsa-proof-end-to-end.html |url-status=live }}</ref>
 Proton Mail exclusively supports [[HTTPS]] and uses [[Transport Layer Security|TLS]] with ephemeral [[Diffie–Hellman key exchange|key exchange]] to encrypt all Internet traffic between users and Proton Mail servers.
-In September 2015, Proton Mail added native support to their web interface and mobile app for PGP. This allows a user to export their Proton Mail PGP-encoded public key to others outside of Proton Mail, enabling them to use the key for [[email encryption]]. The Proton Mail also supports PGP encryption from Proton Mail to outside users.<ref>{{Cite web |last=Yen |first=Andy |date=22 September 2015 |title=Proton Mail adds Facebook PGP integration |url=https://proton.me/news/protonmail-facebook-pgp |access-date=19 October 2015 |website=Proton Mail Blog}}</ref>
+In September 2015, Proton Mail added native support to their web interface and mobile app for PGP. This allows a user to export their Proton Mail PGP-encoded public key to others outside of Proton Mail, enabling them to use the key for [[email encryption]]. The Proton Mail also supports PGP encryption from Proton Mail to outside users.<ref>{{Cite web |last=Yen |first=Andy |date=22 September 2015 |title=Proton Mail adds Facebook PGP integration |url=https://proton.me/news/protonmail-facebook-pgp |access-date=19 October 2015 |website=Proton Mail Blog |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174453/https://proton.me/news/protonmail-facebook-pgp |url-status=live }}</ref>
 === Email sending ===
@@ Line 73: / Line 91: @@
 An email message sent from one Proton Mail account to another is automatically encrypted with the public key of the recipient. Once encrypted, only the private key of the recipient can decrypt the message. When the recipient logs in, their mailbox password decrypts their private key and unlocks their inbox.
-Email messages sent from Proton Mail to non-Proton Mail email addresses may optionally be sent in [[plain text]] or with end-to-end encryption. With encryption, the message is encrypted with AES under a user-supplied password. The recipient receives a link to the Proton Mail website on which they can enter the password and read the decrypted message. Proton Mail assumes that the sender and the recipient have exchanged this password through a [[backchannel]].<ref name=":0" /> Such email messages can be set to self-destruct after a period of time.<ref name="security-details">{{Cite web |date=31 January 2016 |title=Proton Mail Security Details |url=https://proton.me/mail/security |access-date=31 January 2016 |website=Proton Mail Security}}</ref>
+Email messages sent from Proton Mail to non-Proton Mail email addresses may optionally be sent in [[plain text]] or with end-to-end encryption. With encryption, the message is encrypted with AES under a user-supplied password. The recipient receives a link to the Proton Mail website on which they can enter the password and read the decrypted message. Proton Mail assumes that the sender and the recipient have exchanged this password through a [[backchannel]].<ref name=":0" /> Such email messages can be set to self-destruct after a period of time.<ref>{{Cite web |date=31 January 2016 |title=Proton Mail Security Details |url=https://proton.me/mail/security |access-date=31 January 2016 |website=Proton Mail Security |archive-date=October 11, 2023 |archive-url=https://web.archive.org/web/20231011033516/https://proton.me/mail/security |url-status=live }}</ref>
 ==Masked email==
-In 2022 ProtonMail acquired SimpleLogin, a company based in [[Paris]], France that provides [[masked email]] addresses. SimpleLogin functionality is integrated into Proton Mail, but the masked mail service is also available independently to use with any email provider.<ref>{{cite news| title=SimpleLogin joins the Proton family | publisher=SimpleLogin | date=8 April 2022 | url=https://simplelogin.io/blog/simplelogin-join-proton/ }}</ref><ref>{{cite news| last=Yen | first=Andy | title=Proton and SimpleLogin are joining forces | publisher=Proton | date=7 November 2022 | url=https://proton.me/blog/proton-and-simplelogin-join-forces|quote=We have been following SimpleLogin closely for a long time as many Proton Mail users utilize it to prevent their Proton Mail addresses from being leaked to spammers}}</ref>
+In 2022 ProtonMail acquired SimpleLogin, a company based in [[Paris]], France that provides [[masked email]] addresses. SimpleLogin functionality is integrated into Proton Mail, but the masked mail service is also available independently to use with any email provider.<ref>{{cite news | title=SimpleLogin joins the Proton family | publisher=SimpleLogin | date=8 April 2022 | url=https://simplelogin.io/blog/simplelogin-join-proton/ | access-date=December 14, 2023 | archive-date=December 5, 2023 | archive-url=https://web.archive.org/web/20231205023003/https://simplelogin.io/blog/simplelogin-join-proton/ | url-status=live }}</ref><ref>{{cite news | last=Yen | first=Andy | title=Proton and SimpleLogin are joining forces | publisher=Proton | date=7 November 2022 | url=https://proton.me/blog/proton-and-simplelogin-join-forces | quote=We have been following SimpleLogin closely for a long time as many Proton Mail users utilize it to prevent their Proton Mail addresses from being leaked to spammers | access-date=December 14, 2023 | archive-date=June 17, 2023 | archive-url=https://web.archive.org/web/20230617104320/https://proton.me/blog/proton-and-simplelogin-join-forces | url-status=live }}</ref>
 == Location and security ==
-Both Proton Mail and [[ProtonVPN|Proton VPN]] are located in [[Switzerland]] to avoid any [[Global surveillance disclosures (2013–present)|surveillance]] or information requests from countries under the [[Five Eyes#Fourteen Eyes|Fourteen Eyes]],<ref>{{Cite web |last=Koch |first=Richie |date=2018-08-30 |title=The Five, Nine, and Fourteen Eyes agreements (Explained) |url=https://protonvpn.com/blog/5-eyes-global-surveillance/ |access-date=2022-12-12 |website=Proton VPN Blog |language=en-US}}</ref> and/or under [[Edward Snowden disclosures|government surveillance laws]] such as the United States' [[Patriot Act]] or outside the bounds of law.<ref>{{Cite web |last=Koch |first=Richie |date=2020-05-18 |title=Congress renewed the Patriot Act. Here's how to avoid surveillance. |url=https://protonvpn.com/blog/patriot-act-surveillance/ |access-date=2022-12-12 |website=Proton VPN Blog |language=en-US}}</ref> The company claims that it is also located in Switzerland because of its strict [[Privacy law|privacy laws]].<ref>{{Cite web |date=19 May 2014 |title=Why Proton Mail is in Switzerland |url=https://proton.me/news/switzerland |access-date=2022-05-28 |website=Proton |language=en}}</ref>
+Both Proton Mail and [[ProtonVPN|Proton VPN]] are located in [[Switzerland]]. The company claims that it is also located in Switzerland because of its strict [[Privacy law|privacy laws]].<ref>{{Cite web |date=19 May 2014 |title=Why Proton Mail is in Switzerland |url=https://proton.me/news/switzerland |access-date=2022-05-28 |website=Proton |language=en |archive-date=July 6, 2022 |archive-url=https://web.archive.org/web/20220706063449/https://proton.me/news/switzerland |url-status=live }}</ref>
-As of October 2022 Proton Mail currently supports [[multi-factor authentication|two-factor authentication]] with [[Time-based One-time Password algorithm|TOTP]] tokens or [[Universal 2nd Factor|U2F]] security keys, like YubiKeys, for its login process.<ref name="TFA">{{cite web |title=Two Factor Authentication (2FA) |url=https://proton.me/support/two-factor-authentication-2fa |website=Proton Mail Support}}</ref><ref>{{Cite web |date=October 13, 2022 |title=Protect your Proton Account with YubiKey and other security keys |url=https://proton.me/blog/security-keys |access-date=January 19, 2023 |website=Proton Mail Blog}}</ref>
+As of October 2022 Proton Mail currently supports [[multi-factor authentication|two-factor authentication]] with [[Time-based One-time Password algorithm|TOTP]] tokens or [[Universal 2nd Factor|U2F]] security keys, like YubiKeys, for its login process.<ref>{{cite web |title=Two Factor Authentication (2FA) |url=https://proton.me/support/two-factor-authentication-2fa |website=Proton Mail Support |access-date=May 28, 2022 |archive-date=December 3, 2016 |archive-url=https://web.archive.org/web/20161203061636/https://protonmail.com/support/knowledge-base/two-factor-authentication/ |url-status=live }}</ref><ref>{{Cite web |date=October 13, 2022 |title=Protect your Proton Account with YubiKey and other security keys |url=https://proton.me/blog/security-keys |access-date=January 19, 2023 |website=Proton Mail Blog |archive-date=January 19, 2023 |archive-url=https://web.archive.org/web/20230119051837/https://proton.me/blog/security-keys |url-status=live }}</ref>
-In 2021 [[Nadim Kobeissi]] published an article arguing that as Proton Mail was generally accessed through a web client, "no end-to-end encryption guarantees have ever been provided by the Proton Mail service."<ref>{{Cite web|last=Kobeissi|first=Nadim|date=September 6, 2021|title=An Analysis of the ProtonMail Cryptographic Architecture|url=https://eprint.iacr.org/2018/1121.pdf|access-date=2021-11-02|website=The Cryptology ePrint Archive}}</ref>
+In 2021 [[Nadim Kobeissi]] published an article arguing that as Proton Mail was generally accessed through a web client, "no end-to-end encryption guarantees have ever been provided by the Proton Mail service."<ref>{{Cite web|last=Kobeissi|first=Nadim|date=September 6, 2021|title=An Analysis of the ProtonMail Cryptographic Architecture|url=https://eprint.iacr.org/2018/1121.pdf|access-date=2021-11-02|website=The Cryptology ePrint Archive|archive-date=November 17, 2022|archive-url=https://web.archive.org/web/20221117204958/https://eprint.iacr.org/2018/1121.pdf|url-status=live}}</ref>
 In 2021, Proton Mail's security and cryptographic architecture were both independently audited by Securitum, a leading European security auditing company, who uncovered no major issues or security vulnerabilities, and the audit results were publicly published.<ref>{{Cite web |title=Securitum Security Report |url=https://protonmail.com/blog/wp-content/uploads/2021/07/securitum-protonmail-security-audit.pdf |url-status=dead |archive-url=https://web.archive.org/web/20210705120405/https://protonmail.com/blog/wp-content/uploads/2021/07/securitum-protonmail-security-audit.pdf |archive-date=5 July 2021 |website=Proton mail blog}}</ref>
@@ Line 92: / Line 110: @@
 == Data centers ==
+Proton Mail maintains four [[data centers]],<ref>{{Cite web |date=2018-10-18 |title=Proton Mail’s world-class reliability is now backed by a 99.95% service level agreement (SLA) |url=https://proton.me/blog/protonmail-reliability-sla |access-date=2024-08-19 |website=Proton |language=en}}</ref> one in [[Lausanne]] and another in [[Attinghausen]] (in the former K7 military bunker under {{Convert|1000|m|ft|sp=us}} of granite) as a backup.
-Proton Mail maintains two [[data centers]], one in [[Lausanne]] and another in [[Attinghausen]] (in the former K7 military bunker under {{Convert|1000|m|ft|sp=us}} of granite) as a backup. Since the servers are located in [[Switzerland]], they are legally outside of the jurisdiction of the [[European Union]], United States, and other countries. Under Swiss law, all surveillance requests from foreign countries must go through a Swiss court and are subject to international treaties. Prospective surveillance targets are promptly notified and can appeal the request in court.<ref>{{Cite web |date=2022-03-30 |title=Process of Proton Mail |url=https://emailsdesk.com/protonmail-com-login/ |access-date=2022-03-29 |website=Proton Mail |language=en}}</ref>
-Each data center uses [[Load balancing (computing)|load balancing]] across web, mail, and [[SQL]] servers, redundant power supply, [[Hard Drives|hard drives]] with [[full disk encryption]], and exclusive use of [[Linux]] and other open-source software. In December 2014, Proton Mail joined the [[RIPE NCC]] in an effort to have more direct control over the surrounding Internet infrastructure.<ref>{{Cite web |last=Yen |first=Andy |date=2014-12-17 |title=Proton Mail RIPE announcement |url=https://proton.me/news/protonmail-joins-reseaux-ip-europeens-ripe-ncc |access-date=2021-07-16 |website=Proton Mail Blog |language=en}}</ref>
+Each data center uses [[Load balancing (computing)|load balancing]] across web, mail, and [[SQL]] servers, redundant power supply, [[Hard Drives|hard drives]] with [[full disk encryption]], and exclusive use of Linux and other open-source software. In December 2014, Proton Mail joined the [[RIPE NCC]] in an effort to have more direct control over the surrounding Internet infrastructure.<ref>{{Cite web |last=Yen |first=Andy |date=2014-12-17 |title=Proton Mail RIPE announcement |url=https://proton.me/news/protonmail-joins-reseaux-ip-europeens-ripe-ncc |access-date=2021-07-16 |website=Proton Mail Blog |language=en |archive-date=June 7, 2022 |archive-url=https://web.archive.org/web/20220607174737/https://proton.me/news/protonmail-joins-reseaux-ip-europeens-ripe-ncc |url-status=live }}</ref>
 == DDoS attacks ==
-From November 3–7, 2015, Proton Mail was under several [[Distributed denial-of-service attacks on root nameservers|DDoS attacks]] that made the service largely unavailable to users.<ref>{{Cite web |last=Leyden |first=John |date=5 November 2015 |title=Proton Mail still under attack by DDoS bombardment |url=https://www.theregister.co.uk/2015/11/05/protonmail_ddos_attack/ |access-date=5 November 2015 |website=[[The Register]]}}</ref> During the attacks, the company stated on [[Twitter]] that it was looking for a new data center in Switzerland, saying, "many are afraid due to the magnitude of the attack against us".<ref>{{Cite tweet|number=662212032368889856|user=ProtonMail|title=We are seeking a datacenter in Switzerland brave enough to host ProtonMail, many are afraid due to the magnitude of the attack against us.|date=5 November 2015}}</ref>
+From November 3–7, 2015, Proton Mail was under several [[Distributed denial-of-service attacks on root nameservers|DDoS attacks]] that made the service largely unavailable to users.<ref>{{Cite web |last=Leyden |first=John |date=5 November 2015 |title=Proton Mail still under attack by DDoS bombardment |url=https://www.theregister.co.uk/2015/11/05/protonmail_ddos_attack/ |access-date=5 November 2015 |website=[[The Register]] |archive-date=November 15, 2018 |archive-url=https://web.archive.org/web/20181115213536/https://www.theregister.co.uk/2015/11/05/protonmail_ddos_attack/ |url-status=live }}</ref> During the attacks, the company stated on [[Twitter]] that it was looking for a new data center in Switzerland, saying, "many are afraid due to the magnitude of the attack against us".<ref>{{Cite tweet|number=662212032368889856|user=ProtonMail|title=We are seeking a datacenter in Switzerland brave enough to host ProtonMail, many are afraid due to the magnitude of the attack against us.|date=5 November 2015}}</ref>
-In July 2018, Proton Mail reported it was once more suffering from DDoS attacks. CEO Andy Yen claimed that the attackers had been paid by an unknown party to launch the attacks.<ref>{{cite web |last=Lynch |first=Justin |date=2 July 2018 |title=Proton Mail CEO: 'The attacks are continuing' |url=https://www.fifthdomain.com/critical-infrastructure/2018/07/02/protonmail-ceo-the-attacks-are-continuing/ |website=Fifth Domain |publisher=[[Sightline Media Group]]}}</ref> In September 2018, one of the suspected Proton Mail attackers was arrested by British law enforcement and charged in connection with a series of other high-profile cyberattacks against schools and airlines.<ref>{{Cite news |date=6 September 2018 |title=Apophis Squad member responsible for attacks against Proton Mail has been arrested - Proton Mail Blog |language=en-US |work=Proton Mail Blog |url=https://proton.me/blog/apophis-squad-arrest/ |access-date=28 September 2018}}</ref>
+In July 2018, Proton Mail reported it was once more suffering from DDoS attacks. CEO Andy Yen claimed that the attackers had been paid by an unknown party to launch the attacks.<ref>{{cite web |last=Lynch |first=Justin |date=2 July 2018 |title=Proton Mail CEO: 'The attacks are continuing' |url=https://www.fifthdomain.com/critical-infrastructure/2018/07/02/protonmail-ceo-the-attacks-are-continuing/ |website=Fifth Domain |publisher=[[Sightline Media Group]] |access-date=July 3, 2018 |archive-date=May 4, 2019 |archive-url=https://web.archive.org/web/20190504081457/https://www.fifthdomain.com/critical-infrastructure/2018/07/02/protonmail-ceo-the-attacks-are-continuing/ |url-status=live }}</ref> In September 2018, one of the suspected Proton Mail attackers was arrested by British law enforcement and charged in connection with a series of other high-profile cyberattacks against schools and airlines.<ref>{{Cite news |date=6 September 2018 |title=Apophis Squad member responsible for attacks against Proton Mail has been arrested - Proton Mail Blog |language=en-US |work=Proton Mail Blog |url=https://proton.me/blog/apophis-squad-arrest/ |access-date=28 September 2018 |archive-date=May 4, 2019 |archive-url=https://web.archive.org/web/20190504081457/https://protonmail.com/blog/apophis-squad-arrest/ |url-status=live }}</ref>
 == Reception ==
-Technological reviews of Proton Mail are generally positive. ''IT Pro''{{'}}s review scores it 4 out of 5 stars. It lauds the end-to-end encryption of emails, including for non-Proton Mail users, a robust security, and the interfaces of both the web and mobile versions of the email client, with criticisms of the client's search function and the service's price versus the competition.<ref name=ITPro>{{cite web|url=https://www.itpro.com/network-internet/email-providers/367853/protonmail-review|title=ProtonMail review|last=Graw|first=Michael|work=[[IT Pro]]|date=5 October 2022|access-date=12 August 2023|archive-url=https://web.archive.org/web/20230812100351/https://www.itpro.com/network-internet/email-providers/367853/protonmail-review|archive-date=12 August 2023|url-status=live}}</ref> ''[[PCMag]]'' also rates the service 4 out of 5 stars, praising the security, in addition to loading embedded images without returning the IP address to senders and setting expirations for messages, but questioning the cap on daily messages even with a subscription.<ref name=PCMag>{{cite web|url=https://www.pcmag.com/reviews/protonmail|title=ProtonMail - Review|last=Rubenking|first=Neil J.|work=[[PCMag]]|date=12 December 2022|access-date=12 August 2022|archive-url=https://web.archive.org/web/20230812143447/https://www.pcmag.com/reviews/protonmail|archive-date=August 12, 2023|url-status=bot: unknown}}</ref> ''[[TechRadar]]'' gives the service 4.5 out of 5 stars, calling it one of the best secure email services, although it noted limitations such as that it is not suited for voluminous messaging, the reluctance of websites to adopt the service, and that email subject lines are not encrypted.<ref name=TechRadar>{{cite web|url=https://www.techradar.com/reviews/protonmail-secure-email|title=Proton Mail review|last=Athow|first=Desire|work=[[TechRadar]]|date=16 June 2023|access-date=12 August 2023|archive-url=https://web.archive.org/web/20230812101201/https://www.techradar.com/reviews/protonmail-secure-email|archive-date=12 August 2023|url-status=live}}</ref>
+Technological reviews of Proton Mail are generally positive. ''IT Pro''{{'}}s review scores it 4 out of 5 stars. It lauds the end-to-end encryption of emails, including for non-Proton Mail users, a robust security, and the interfaces of both the web and mobile versions of the email client, with criticisms of the client's search function and the service's price versus the competition.<ref>{{cite web|url=https://www.itpro.com/network-internet/email-providers/367853/protonmail-review|title=ProtonMail review|last=Graw|first=Michael|work=[[IT Pro]]|date=5 October 2022|access-date=12 August 2023|archive-url=https://web.archive.org/web/20230812100351/https://www.itpro.com/network-internet/email-providers/367853/protonmail-review|archive-date=12 August 2023|url-status=live}}</ref> ''[[PCMag]]'' also rates the service 4 out of 5 stars, praising the security, in addition to loading embedded images without returning the IP address to senders and setting expirations for messages, but questioning the cap on daily messages even with a subscription.<ref>{{cite web|url=https://www.pcmag.com/reviews/protonmail|title=ProtonMail - Review|last=Rubenking|first=Neil J.|work=[[PCMag]]|date=12 December 2022|access-date=12 August 2022|archive-url=https://web.archive.org/web/20230812143447/https://www.pcmag.com/reviews/protonmail|archive-date=August 12, 2023|url-status=bot: unknown}}</ref> ''[[TechRadar]]'' gives the service 4.5 out of 5 stars, calling it one of the best secure email services, although it noted limitations such as that it is not suited for voluminous messaging, the reluctance of websites to adopt the service, and that email subject lines are not encrypted.<ref>{{cite web|url=https://www.techradar.com/reviews/protonmail-secure-email|title=Proton Mail review|last=Athow|first=Desire|work=[[TechRadar]]|date=16 June 2023|access-date=12 August 2023|archive-url=https://web.archive.org/web/20230812101201/https://www.techradar.com/reviews/protonmail-secure-email|archive-date=12 August 2023|url-status=live}}</ref>
-Proton Mail was the recipient of three [[Lovie Award]]s, one gold and The People's Lovie in 2016,<ref name=Lovie-2016>{{cite press release|url=https://www.lovieawards.com/press/press-releases/the-6th-annual-lovie-award-winners-announced|title=The 6th Annual Lovie Award Winners Announced|work=The Lovie Awards|publisher=[[International Academy of Digital Arts and Sciences]]|date=27 September 2016|access-date=12 August 2023|archive-url=https://archive.today/20230812085402/https://www.lovieawards.com/press/press-releases/the-6th-annual-lovie-award-winners-announced/|archive-date=12 August 2023|url-status=live}}</ref> and one silver in 2017.<ref name=Lovie-2017>{{cite web|url=https://winners.lovieawards.com/#!y=2017&m=187|title=2017 Winners Gallery|work=The Lovie Awards|publisher=[[International Academy of Digital Arts and Sciences]]|date=2017|access-date=12 August 2023|archive-url=https://archive.today/20230812084841/https://winners.lovieawards.com/%23!y=2017&m=187|archive-date=12 August 2023|url-status=live}}</ref>
+Proton Mail was the recipient of three [[Lovie Award]]s, one gold and The People's Lovie in 2016,<ref>{{cite press release|url=https://www.lovieawards.com/press/press-releases/the-6th-annual-lovie-award-winners-announced|title=The 6th Annual Lovie Award Winners Announced|work=The Lovie Awards|publisher=[[International Academy of Digital Arts and Sciences]]|date=27 September 2016|access-date=12 August 2023|archive-url=https://archive.today/20230812085402/https://www.lovieawards.com/press/press-releases/the-6th-annual-lovie-award-winners-announced/|archive-date=12 August 2023|url-status=live}}</ref> and one silver in 2017.<ref>{{cite web|url=https://winners.lovieawards.com/#!y=2017&m=187|title=2017 Winners Gallery|work=The Lovie Awards|publisher=[[International Academy of Digital Arts and Sciences]]|date=2017|access-date=12 August 2023|archive-url=https://archive.today/20230812084841/https://winners.lovieawards.com/%23!y=2017&m=187|archive-date=12 August 2023|url-status=live}}</ref>
 == Blocks ==
 === Belarus ===
-On November 15, 2019, [[Proton Technologies|Proton]] confirmed that the government of the [[Belarus|Republic of Belarus]] had issued a block across the country of Proton Mail and [[ProtonVPN|Proton VPN]] IP addresses. The block was no longer in place four days later. No explanation was given to Proton Mail for the block, nor for the block being lifted.<ref>{{Cite web |date=15 November 2019 |title=Is Proton Mail blocked in Belarus? |url=https://proton.me/blog/blocked-belarus/ |website=Proton Mail Blog}}</ref>
+On November 15, 2019, [[Proton Technologies|Proton]] confirmed that the government of the [[Belarus|Republic of Belarus]] had issued a block across the country of Proton Mail and [[ProtonVPN|Proton VPN]] IP addresses. The block was no longer in place four days later. No explanation was given to Proton Mail for the block, nor for the block being lifted.<ref>{{Cite web |date=15 November 2019 |title=Is Proton Mail blocked in Belarus? |url=https://proton.me/blog/blocked-belarus/ |website=Proton Mail Blog |access-date=September 14, 2022 |archive-date=November 17, 2019 |archive-url=https://web.archive.org/web/20191117112402/https://protonmail.com/blog/blocked-belarus/ |url-status=live }}</ref>
 === Russia ===
-On January 29, 2020, the Russian [[Federal Service for Supervision of Communications, Information Technology and Mass Media]] reported that it had implemented a complete block of Proton Mail services within the [[Russia|Russian Federation]].<ref>{{cite news |last1=Tsydenova |first1=Nadezhda |last2=Ivanova |first2=Polina |date=January 29, 2020 |title=Russia blocks encrypted email service Proton Mail |publisher=[[Reuters]] |editor-last=Heinrich |editor-first=Mark |url=https://www.reuters.com/article/us-russia-protonmail/russia-blocks-encrypted-email-service-protonmail-idUSKBN1ZS1K8}}</ref> As a reason for the block, it cited Proton Mail's refusal to give up information relating to accounts that allegedly sent out spam with terror threats.<ref>{{Cite web |date=2020-01-29 |title=Почтовый сервис Proton Mail заблокировали в России из-за сообщений о минированиях |url=https://www.kommersant.ru/doc/4234867 |access-date=2020-01-29 |website=www.kommersant.ru |language=ru}}</ref><ref>{{Cite web |agency=Reuters |date=2020-01-29 |title=Russia Blocks Encrypted Swiss Email Service Proton Mail |url=https://www.themoscowtimes.com/2020/01/29/russia-blocks-encrypted-swiss-email-service-protonmail-a69088 |access-date=2020-01-29 |website=The Moscow Times |language=en}}</ref> However, Proton Mail claimed that it did not receive any requests from Russian authorities regarding any such accounts.<ref>{{Cite web |title=Proton Mail не получала просьб о помощи в поисках лжеминеров |url=https://www.interfax.ru/world/693178 |access-date=2020-01-29 |website=Interfax.ru |language=ru}}</ref><ref>{{Cite web |date=2020-01-29 |title=Россия не обращалась за информацией о "минерах", заявили в Proton Mail |url=https://ria.ru/20200129/1564015317.html |access-date=2020-01-29 |website=РИА Новости |language=ru}}</ref> In response to the block, the Proton Mail [[Twitter]] account recommended legitimate users circumvent the block via VPNs or Tor.
+On January 29, 2020, the Russian [[Federal Service for Supervision of Communications, Information Technology and Mass Media]] reported that it had implemented a complete block of Proton Mail services within the [[Russia|Russian Federation]].<ref>{{cite news |last1=Tsydenova |first1=Nadezhda |last2=Ivanova |first2=Polina |date=January 29, 2020 |title=Russia blocks encrypted email service Proton Mail |publisher=[[Reuters]] |editor-last=Heinrich |editor-first=Mark |url=https://www.reuters.com/article/us-russia-protonmail/russia-blocks-encrypted-email-service-protonmail-idUSKBN1ZS1K8 |access-date=January 30, 2020 |archive-date=January 30, 2020 |archive-url=https://web.archive.org/web/20200130180757/https://www.reuters.com/article/us-russia-protonmail/russia-blocks-encrypted-email-service-protonmail-idUSKBN1ZS1K8 |url-status=live }}</ref> As a reason for the block, it cited Proton Mail's refusal to give up information relating to accounts that allegedly sent out spam with terror threats.<ref>{{Cite web |date=2020-01-29 |title=Почтовый сервис Proton Mail заблокировали в России из-за сообщений о минированиях |url=https://www.kommersant.ru/doc/4234867 |access-date=2020-01-29 |website=www.kommersant.ru |language=ru |archive-date=January 29, 2020 |archive-url=https://web.archive.org/web/20200129123625/https://www.kommersant.ru/doc/4234867 |url-status=live }}</ref><ref>{{Cite web |agency=Reuters |date=2020-01-29 |title=Russia Blocks Encrypted Swiss Email Service Proton Mail |url=https://www.themoscowtimes.com/2020/01/29/russia-blocks-encrypted-swiss-email-service-protonmail-a69088 |access-date=2020-01-29 |website=The Moscow Times |language=en |archive-date=January 29, 2020 |archive-url=https://web.archive.org/web/20200129170137/https://www.themoscowtimes.com/2020/01/29/russia-blocks-encrypted-swiss-email-service-protonmail-a69088 |url-status=live }}</ref> However, Proton Mail claimed that it did not receive any requests from Russian authorities regarding any such accounts.<ref>{{Cite web |title=Proton Mail не получала просьб о помощи в поисках лжеминеров |url=https://www.interfax.ru/world/693178 |access-date=2020-01-29 |website=Interfax.ru |language=ru |archive-date=January 29, 2020 |archive-url=https://web.archive.org/web/20200129170137/https://www.interfax.ru/world/693178 |url-status=live }}</ref><ref>{{Cite web |date=2020-01-29 |title=Россия не обращалась за информацией о "минерах", заявили в Proton Mail |url=https://ria.ru/20200129/1564015317.html |access-date=2020-01-29 |website=РИА Новости |language=ru |archive-date=January 29, 2020 |archive-url=https://web.archive.org/web/20200129163940/https://ria.ru/20200129/1564015317.html |url-status=live }}</ref> In response to the block, the Proton Mail [[Twitter]] account recommended legitimate users circumvent the block via VPNs or Tor.
-In March 2020, the company announced that even though the Russia ban was not particularly successful, and the service continues to be largely available in Russia without using a VPN, Proton Mail will be releasing new anti-censorship features in both Proton Mail and Proton VPN desktop and mobile apps which will allow more block attempts to be automatically circumvented.<ref>{{Cite web |date=2020-03-13 |title=We are rolling out technologies which will help us better overcome attempts to block Proton Mail. |url=https://www.reddit.com/r/ProtonMail/comments/fhig4f/we_are_rolling_out_technologies_which_will_help/ |access-date=2020-03-14 |website=Reddit |language=en}}</ref>
+In March 2020, the company announced that even though the Russia ban was not particularly successful, and the service continues to be largely available in Russia without using a VPN, Proton Mail will be releasing new anti-censorship features in both Proton Mail and Proton VPN desktop and mobile apps which will allow more block attempts to be automatically circumvented.<ref>{{Cite web |date=2020-03-13 |title=We are rolling out technologies which will help us better overcome attempts to block Proton Mail. |url=https://www.reddit.com/r/ProtonMail/comments/fhig4f/we_are_rolling_out_technologies_which_will_help/ |access-date=2020-03-14 |website=Reddit |language=en |archive-date=November 14, 2020 |archive-url=https://web.archive.org/web/20201114071223/https://www.reddit.com/r/ProtonMail/comments/fhig4f/we_are_rolling_out_technologies_which_will_help/ |url-status=live }}</ref>
 == Compliance with Swiss court orders ==
-According to Proton Mail's transparency report, it is legally obligated to follow Swiss court orders if Swiss law is broken, and in 2020 Proton Mail received 3,572 orders from Swiss authorities and contested 750 of them.<ref>{{Cite web |date=2021-09-10 |title=Transparency Report |url=https://proton.me/legal/transparency |access-date=2021-09-10 |website=proton.me}}</ref> Due to the encryption utilized, Proton Mail is unable to hand over the contents of encrypted emails under any circumstances, but according to Proton's privacy policy, Proton Mail can be legally compelled to log IP addresses as part of a Swiss criminal investigation.<ref>{{Cite web |date=2022-05-25 |title=Proton Privacy Policy |url=https://proton.me/legal/privacy |access-date=2021-09-10 |website=proton.me}}</ref> For this reason, the company strongly suggests that users who need to hide their identity from the Swiss government use their Tor hidden service/onion site. In May 2022, Proton updated its privacy policy and made explicit a separate privacy policy for its [[Proton VPN]] service, which has a different treatment under Swiss law and has a strict no-logs policy which was also confirmed by an external audit.<ref>{{Cite web |date=2022-04-21 |title=Proton VPN Passes Its Latest No-Logs Audit |url=https://www.cnet.com/news/privacy/protonvpn-clears-its-latest-no-logs-audit/ |access-date=2022-05-28 |website=cnet.com}}</ref>
+According to Proton Mail's transparency report, it is legally obligated to follow Swiss court orders if Swiss law is broken. In 2020, Proton Mail received 3,572 orders from Swiss authorities and contested 750 of them.<ref>{{Cite web |date=2021-09-10 |title=Transparency Report |url=https://proton.me/legal/transparency |access-date=2021-09-10 |website=proton.me |archive-date=August 25, 2022 |archive-url=https://web.archive.org/web/20220825141230/https://proton.me/legal/transparency |url-status=live }}</ref> Due to the encryption utilized, Proton Mail is unable to hand over the contents of encrypted emails under any circumstances, but according to Proton's privacy policy, Proton Mail can be legally compelled to log IP addresses as part of a Swiss criminal investigation.<ref>{{Cite web |date=2022-05-25 |title=Proton Privacy Policy |url=https://proton.me/legal/privacy |access-date=2021-09-10 |website=proton.me |archive-date=September 5, 2021 |archive-url=https://web.archive.org/web/20210905222006/https://protonmail.com/privacy-policy |url-status=live }}</ref> For this reason, the company strongly suggests that users who need to hide their identity from the Swiss government use their Tor hidden service/onion site. In May 2022, Proton updated its privacy policy and made explicit a separate privacy policy for its [[Proton VPN]] service, which has a different treatment under Swiss law and has a strict no-logs policy which was also confirmed by an external audit.<ref>{{Cite web |date=2022-04-21 |title=Proton VPN Passes Its Latest No-Logs Audit |url=https://www.cnet.com/news/privacy/protonvpn-clears-its-latest-no-logs-audit/ |access-date=2022-05-28 |website=cnet.com |archive-date=May 14, 2022 |archive-url=https://web.archive.org/web/20220514084551/https://www.cnet.com/news/privacy/protonvpn-clears-its-latest-no-logs-audit/ |url-status=live }}</ref>
-Notable cases involving Swiss court orders include a case involving death threats made against well-known immunologist [[Anthony Fauci]] and a case against French climate activists.<ref>{{Cite news |last1=Silva |first1=Gioia da |date=2021-08-04 |title="If you say the word compulsory vaccination again, I'll knock your and your wife's teeth out": The Swiss service Proton Mail is repeatedly misused for threats |newspaper=Neue Zürcher Zeitung |url=https://www.nzz.ch/technologie/wie-weit-geht-die-privatsphaere-beim-schweizer-service-protonmail-ld.1638648?reduced=true |access-date=2021-09-10}}</ref><ref>{{Cite web |date=2021-09-06 |title=Important clarifications regarding arrest of climate activist |url=https://proton.me/news/climate-activist-arrest |access-date=2021-09-10 |website=proton.me}}</ref> After these cases, in October 2021, Proton Mail won an important Swiss court victory that confirmed that email services cannot be considered telecommunications providers, and consequently are not subject to the data retention requirements imposed on telecommunications providers.<ref>{{Cite news |last=Shields |first=Michael |date=2021-10-22 |title=Secure email group Proton wins Swiss appeal over surveillance rules |language=en |work=Reuters |url=https://www.reuters.com/technology/proton-wins-swiss-court-appeal-over-surveillance-rules-2021-10-22/ |access-date=2022-05-26}}</ref>
+Notable cases involving Swiss court orders include a case involving death threats made against immunologist [[Anthony Fauci]] and a case against French climate activists.<ref>{{Cite news |last=Silva |first=Gioia da |date=3 August 2021 |title=«Wenn du noch einmal das Wort Impfpflicht in den Mund nimmst, schlage ich dir und deiner Frau die Zähne aus»: Der Schweizer Service ProtonMail wird immer wieder für Drohungen missbraucht |trans-title="If you say the word compulsory vaccination again, I'll knock your and your wife's teeth out": The Swiss service Proton Mail is repeatedly misused for threats |url=https://www.nzz.ch/technologie/wie-weit-geht-die-privatsphaere-beim-schweizer-service-protonmail-ld.1638648 |access-date=2021-09-10 |work=Neue Zürcher Zeitung |language=de-CH |archive-date=May 13, 2024 |archive-url=https://web.archive.org/web/20240513052917/https://www.nzz.ch/technologie/wie-weit-geht-die-privatsphaere-beim-schweizer-service-protonmail-ld.1638648 |url-status=live }}</ref><ref>{{Cite web |date=2021-09-06 |title=Important clarifications regarding arrest of climate activist |url=https://proton.me/news/climate-activist-arrest |access-date=2021-09-10 |website=proton.me |archive-date=May 28, 2022 |archive-url=https://web.archive.org/web/20220528174445/https://proton.me/news/climate-activist-arrest |url-status=live }}</ref> After these cases, Proton Mail won an important Swiss court victory in October 2021 that confirmed that email services cannot be considered telecommunications providers, and consequently are not subject to the data retention requirements imposed on telecommunications providers.<ref>{{Cite news |last=Shields |first=Michael |date=2021-10-22 |title=Secure email group Proton wins Swiss appeal over surveillance rules |language=en |work=Reuters |url=https://www.reuters.com/technology/proton-wins-swiss-court-appeal-over-surveillance-rules-2021-10-22/ |access-date=2022-05-26 |archive-date=October 17, 2023 |archive-url=https://web.archive.org/web/20231017135323/https://www.reuters.com/technology/proton-wins-swiss-court-appeal-over-surveillance-rules-2021-10-22/ |url-status=live }}</ref> In May 2024, Proton was reported having disclosed personal data of a person involved in [[Catalan independence movement|Catalan independence]] activism and accused of a felony by the Spanish authorities.<ref>{{Cite web |date=May 14, 2024 |title=Proton Mail provided user data that led to an arrest in Spain |url=https://www.techspot.com/news/102981-proton-mail-provided-user-data-led-arrest-spain.html |url-status=live |website=TechSpot |access-date=May 14, 2024 |archive-date=May 14, 2024 |archive-url=https://web.archive.org/web/20240514125832/https://www.techspot.com/news/102981-proton-mail-provided-user-data-led-arrest-spain.html }}</ref>
 == Account types ==
-As of September 22, 2023, Proton Mail offers the following account types for individuals:<ref name="prices">{{cite web |title=Proton Mail - Pricing |url=https://proton.me/mail/pricing |access-date=21 December 2023 |website=Proton}}</ref><ref>{{Cite web |title=Proton Family plan |url=https://proton.me/family |access-date=2023-12-21 |website=Proton |language=en}}</ref>
+As of September 22, 2023, Proton Mail offers the following account types for individuals:<ref>{{cite web |title=Proton Mail - Pricing |url=https://proton.me/mail/pricing |access-date=21 December 2023 |website=Proton |archive-date=June 9, 2019 |archive-url=https://web.archive.org/web/20190609151127/https://protonmail.com/pricing |url-status=live }}</ref><ref>{{Cite web |title=Proton Family plan |url=https://proton.me/family |access-date=2023-12-21 |website=Proton |language=en |archive-date=December 21, 2023 |archive-url=https://web.archive.org/web/20231221174009/https://proton.me/family |url-status=live }}</ref>
 {|class="wikitable sortable"
@@ Line 134: / Line 152: @@
 |-
 ! Proton Free
-|150||500MB*||1 Address||-||Free||Limited Support
+|150||1 GB*||1 Address||-||Free||Limited Support
 |-
 !Mail Plus
@@ Line 151: / Line 169: @@
 |}
-<nowiki>*</nowiki>Proton offered free users an option to increase their storage to 1GB if they met certain criteria.
+<nowiki>*</nowiki>The default Proton Mail free storage is 500 MB that users can increase to 1GB if they meet certain criteria.
-As of September 22, 2023, Proton Mail offers the following account types for businesses:<ref name="business-prices">{{cite web|title=Proton for Business plans and pricing|url=https://proton.me/business/plans|access-date=20 February 2023|website=Proton}}</ref>
+As of September 22, 2023, Proton Mail offers the following account types for businesses:<ref>{{cite web|title=Proton for Business plans and pricing|url=https://proton.me/business/plans|access-date=20 February 2023|website=Proton|archive-date=February 20, 2023|archive-url=https://web.archive.org/web/20230220210101/https://proton.me/business/plans|url-status=live}}</ref>
 {|class="wikitable sortable"
@@ Line 164: / Line 182: @@
 |-
 ! Mail Essentials
-||15 GB||10 Address||3||€6.99 /mo||-
+||15 GB||10 Addresses||3||€6.99 /mo||-
 |-
 ! Business
@@ Line 173: / Line 191: @@
 |}
-{{Reflist|group=c}}
+{{reflist|group=c}}
 == See also ==
@@ Line 180: / Line 198: @@
 == References ==
-{{Reflist}}
+{{reflist}}
 == External links ==
@@ Line 191: / Line 209: @@
 [[Category:Cross-platform software]]
 [[Category:Cryptographic software]]
+[[Category:End-to-end encryption]]
 [[Category:Free and open-source Android software]]
 [[Category:Free security software]]
@@ Line 196: / Line 215: @@
 [[Category:Internet privacy software]]
 [[Category:Internet properties established in 2013]]
-[[Category:Secure communication]]
 [[Category:Software using the GPL license]]
 [[Category:Software using the MIT license]]
 [[Category:Swiss brands]]
 [[Category:Tor onion services]]
+[[Category:Proton AG]]

v t e Tor onion services
List Category
Search engines	Ahmia Brave Search* DuckDuckGo* Cliqz* Grams MetaGer* Searx*
News	BBC News* Bellingcat* Current Time TV* Die Tageszeitung* Deutsche Welle* The Daily Stormer* Darknetlive DeepDotWeb ProPublica* Radio Free Asia* Radio Free Europe/Radio Liberty* The Guardian* Independent Media Center* The Intercept* The New York Times* ProPublica* Voice of America*
File storage and peer-to-peer file sharing	BTDigg* Freedom Hosting Free Haven Project KickassTorrents The Pirate Bay*
Email and instant messaging	Bitmessage.ch Briar Keybase* Proton Mail* Riseup* Tor Mail TorChat
Social media and forums	8chan* Dark0de Dread Facebook* HackBB The Hub Reddit* Twitter* Kiwi Farms* The Hidden Wiki
Financial	Blockchain.com* Helix
Darknet markets	Agora AlphaBay Atlantis Black Market Reloaded Dream Market Evolution The Farmer's Market Hansa Hydra Market Sheep Marketplace Silk Road TheRealDeal Russian Anonymous Marketplace Tor Carding Forum Utopia White House Market
Document archives	Archive.today* Doxbin (darknet) Internet Archive* Sci-Hub* Z-Library*
Nonprofit organizations	Amnesty International* Electronic Frontier Foundation* Freedom of the Press Foundation* Front Line Defenders* La Quadrature du Net* Privacy International* Telecomix
Operating systems	DivestOS* Qubes OS* Tails* Whonix*
Government	Central Intelligence Agency*
Whistleblowing	Distributed Denial of Secrets* Filtrala GlobaLeaks Ljost NawaatLeaks SecureDrop* WikiLeaks* WildLeaks
Pornography	Boystown Childs Play Lolita City Playpen Pornhub* Welcome to Video
Other	1.1.1.1* Brave* DEF CON* F-Droid* Mailpile* Mullvad* Njalla* OnionShare* Terms of Service; Didn't Read*
Sites in italics are now offline or discontinued (not counting ambiguously forked sites). Tor .onion domain Tor2web *Maintains additional presence on the surface web