Proton

System requirements for Proton Mail Bridge

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Introduction to Bridge

Proton Mail Bridge is officially supported on:

Windows

  • Up-to-date 64-bit versions of Windows 10 (22H2) and Windows 11.

macOS

  • macOS 15 (Sequoia) and macOS 26 (Tahoe).

Linux

  • Available as 64-bit DEB, RPM, and PKGBUILD packages. Officially supported for the latest LTS version of Ubuntu and the latest version of Fedora Workstation.

Hardware

  • Bridge supports only 64-bit systems. It doesn’t support ARM devices other than those running on Apple silicon (M-series Macs).
  • The disk space required will depend on your mailbox size. For memory, Bridge shouldn’t use more than 2 GB of RAM at any time.

Official support for an operating system means that we test each release with each system. We will be able to provide the highest level of technical support for officially supported versions. Other versions that fit the system requirements should work, however, they have not been fully tested on our side.