Proton Mail1.14.0

Read, compose, and organize private messages from a Linux desktop with Proton Mail, an encrypted email and calendar application from Proton AG. It brings Proton Mail and Proton Calendar into one interface, lets you switch among multiple Proton Mail accounts, and supports sending and receiving encrypted messages with attachments. Folders, labels, and alternate inbox views help keep correspondence organized, while native desktop notifications alert you to new activity.

You can send password-protected messages to any recipient and use a dark interface for reduced glare. Proton Mail is designed for personal, professional, and sensitive communications, protecting the entire inbox across your devices and avoiding the use of message content for targeted advertising. Messages are encrypted on Proton’s servers and transferred securely between those servers and your devices, reducing the risk of interception.

Its zero-access design encrypts content on the client with a key Proton cannot access, so Proton lacks the technical ability to decrypt those messages. The open-source cryptographic implementation uses AES, RSA, and OpenPGP with open-source libraries, while phishing, spam, and tracking protections cover communications from additional threats. This open-source Linux productivity application is published under an open-source license and runs on x86_64 (amd64) systems with Linux and snapd; the current release is version 1.14.0.