CachyOS Apps

Install Proton Mail on CachyOS

Proton official desktop application for Proton Mail and Proton Calendar.

From the official CachyOS repo. Install with pacman, no AUR helper needed.

Reviewed Nov 2, 2026 · independent guide

How do I install Proton Mail on CachyOS?

Run this in a terminal, then open Proton Mail from your app menu:

sudo pacman -S proton-mail-bin

proton-mail-bin is in the cachyos repo, the CachyOS project's own package repository, so pacman installs it directly with no AUR helper and no build script. The package is signed with the CachyOS repository key, and pacman checks the signature before it installs.

What should I do after installing Proton Mail?

  1. Open Proton Mail from your app menu.
  2. Or run proton-mail in a terminal.
  3. Run pacman -Qi proton-mail-bin to see the installed version and the optional dependencies.

How do I update or remove Proton Mail?

Update:

sudo pacman -Syu

Remove:

sudo pacman -Rns proton-mail-bin

What is Proton Mail?

Proton official desktop application for Proton Mail and Proton Calendar.

Package description: Proton official desktop application for Proton Mail and Proton Calendar

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    Proton Mail on CachyOS: questions

    Is Proton Mail in the official CachyOS repo?

    Yes. The proton-mail-bin package is in the cachyos repo, version 1.15.0-1, built 2026-09-25. Install it with sudo pacman -S proton-mail-bin.

    Do I need an AUR helper for Proton Mail?

    No. It comes from the cachyos repo, so plain pacman installs and updates it, and sudo pacman -Syu keeps it current.

    What is the Proton Mail command?

    proton-mail. The package is called proton-mail-bin.