Hydronium

App

Proton Mail Bridge for Ubuntu Touch

About Hydronium

Hydronium is an app that allows you to connect to Proton Mail on Ubuntu Touch using any email client. It installs and runs the Proton Mail Bridge locally, and provides a friendly UI for configuring the bridge and adding your account(s) to it. Full system access is required to manage the bridge service. Make sure to follow the how-to in the app for correctly configuring your e-mail client.

Supports:
- Regular login.
- Login with 2FA token/TOTP.
- Login with secondary inbox password (supposedly; untested).

Recent Changes

Update to Proton Bridge 3.26.0. Fix some issues with the UI detecting whether or not the service is running/installed.

Permissions

Full System Access

Community Built

This app has been released under the GNU GPL v3 license.It is developed in the open and you can review the source code.

Get involved

Content Rating

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Info

Published Date
Mar 16, 2026
Updated Date
Sep 3, 2026
Current Version
1.1.1+pmb3.26.0
Total Downloads
408
Latest Version Downloads
51
Supported Architectures
arm64, amd64

Reviews

ChromiumOS-Guy

Reviewed Sep 3, 2026 for version 1.1.1+pmb3.26.0

must have