Proton

Proton Mail

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UPDATE Sept. 15, 2020: SwissSign has dealt with the DDoS attack and has taken measures to prevent similar outages in the future. Therefore, we are using them again as our certificate authority. We have updated the fingerprints at the bottom of this a
An illustration of the multi-account feature for iOS.
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UPDATE July 21, 2020: Multi-account support for iOS has exited beta and is now available to all our iOS users. Version 1.12 of Proton Mail iOS lets you manage multiple Proton Mail accounts on your phone without needing to log in and log out repeated
An illustration of the Proton Mail Android app going open source.
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Starting today, every app you use to access your Proton Mail inbox is open source and has passed an independent security audit. One of our guiding principles is transparency. You deserve to know who we are, how our products can and cannot protect yo
illustration of Proton Mail Android client security
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The following article presents a high-level overview of Proton Mail’s Android security model and explains how the app protects your sensitive data. You can view our Android app’s open-source code on GitHub. Read our threat model for more information
Illustration of Proton Mail Bridge open source
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We are one step closer to fully open sourcing all our apps. Proton Mail Bridge joins iOS and the web app as open source software, and it has also passed an independent security audit. Trust and transparency are core values of Proton Mail. We want yo
Illustration of the Bridge security model
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Proton Mail Bridge is a desktop application that runs in the background on your computer and encrypts and decrypts your mail as it enters and leaves your device. It allows for full integration of your Proton Mail account with email clients like Micro
protonmail bridge for linux
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We are excited to announce that starting today, you can use Bridge to connect your Proton Mail account with your desktop email app on the Linux operating system. Proton Mail Bridge is a desktop app available to all paying subscribers that integrates
Illustration of vulnerability disclosure
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Our mission at Proton is to make online safety accessible to everyone. Millions of people depend on our Proton Mail to secure their communications and keep their information private. In order to make this high level of security accessible to all Int
Illustration of a user using DKIM keys to stop a hacker spoofing their email.
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It is now harder for hackers and spammers to impersonate Proton Mail users that have custom domain email addresses. We have introduced the DKIM key management in beta, which allows you to manually rotate your DKIM keys. This is part of our continuing
An illustration of Proton Mail being blocked in Russia.
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You can read this blog post in Russian below. Этот пост доступен на русском языке ниже. On Jan. 29, the Russian government announced via an official website that effective immediately, Proton Mail would be blocked in Russia. (Proton VPN, however, i
illustration of Proton Mail iOS open source
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We’re happy to announce that the Proton Mail iOS app is now fully open source.  We believe in transparency, the power of community, and building a more private and secure future for all. That’s why our web app has been open source since 2015, and it