Proton Mail

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Our Bridge app is now open source for macOS, Windows, and Linux. Find links to
the code and an independent security audit report.

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You can use Proton Mail Bridge with IMAP/SMTP email clients. Here we explain the
Bridge security architecture and how it protects your data.
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Proton Mail Linux users can now connect their email accounts with the
Thunderbird client.

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This document describes the vulnerability disclosure policy our security team
follows when we discover flaws in third-party products.

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DKIM key management lets users rotate their keys manually, making it harder for
attackers to spoof their email address.

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Russia has periodically made attempts to block Proton Mail. Here is the current
status and how you can bypass blocks placed on Proton Mail.

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We have released the Proton Mail iOS app as open source software as part of our
commitment to transparency and supporting the developer community.
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We have published the Proton Mail iOS security model to highlight how Proton
Mail for iOS has a higher level of security compared to typical apps.
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It’s important to trust your email provider because they safeguard some of your
most sensitive data. Should you trust Proton Mail?

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The new version of Proton Mail Android has multi-account support so users can
access multiple Proton Mail accounts on their Android device.
