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An illustration of the multi-account feature for iOS.
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  • Proton Mail
  • 製品アップデート
Out of beta: Switch between multiple accounts in Proton Mail iOS
Multi-account support is now available on the new version of Proton Mail iOS. Access all your Proton Mail accounts on the go with your iOS device.
An illustration of the Proton Mail Android app going open source.
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  • Proton Mail
  • 製品アップデート
All Proton Mail apps are now open source, as Android joins the list!
Our Proton Mail Android app is open source. We are committed to transparency and contributing to the open source and privacy tech community.
illustration of Proton Mail Android client security
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  • Proton Mail
  • 製品アップデート
Proton Mail Android client security
Our Android security model explains what our app does to secure Proton users’ data. This article outlines how we handle data and mitigate potential attacks.
Illustration of Proton Mail Bridge open source
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  • Proton Mail
  • 製品アップデート
Proton Mail Bridge is now open source!
Our Bridge app is now open source for macOS, Windows, and Linux. Find links to the code and an independent security audit report.
Illustration of the Bridge security model
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  • Proton Mail
  • 製品アップデート
The Proton Mail Bridge security model
You can use Proton Mail Bridge with IMAP/SMTP email clients. Here we explain the Bridge security architecture and how it protects your data.
protonmail bridge for linux
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  • Proton Mail
  • 製品アップデート
Proton Mail launches Bridge for Linux
Proton Mail Linux users can now connect their email accounts with the Thunderbird client.
代替ルーティングのイラスト
  • 製品アップデート
Protonアプリの検閲を防ぐための代替ルーティングの導入
Protonは、ユーザーがDNSブロックを回避するのに役立つ検閲対策措置を提供しています。この記事では、これらのシステムの仕組みについて説明します。
Illustration of vulnerability disclosure
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  • Proton Mail
  • 製品アップデート
Proton Mail’s responsible vulnerability disclosure policy
This document describes the vulnerability disclosure policy our security team follows when we discover flaws in third-party products.
Illustration of a user using DKIM keys to stop a hacker spoofing their email.
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  • Proton Mail
  • 製品アップデート
Introducing DKIM key management, a new feature to protect against domain name impersonation
DKIM key management lets users rotate their keys manually, making it harder for attackers to spoof their email address.
An illustration of Proton Mail being blocked in Russia.
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  • Proton Mail
  • 製品アップデート
Russia’s Proton Mail block – New revelations and information
Russia has periodically made attempts to block Proton Mail. Here is the current status and how you can bypass blocks placed on Proton Mail.
illustration of ProtonCalendar security model
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  • Proton Calendar
  • 製品アップデート
The Proton Calendar security model
The Proton Calendar uses an innovative encryption model to deliver the high level of security Proton users expect.