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Download Proton Safe

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A guided app to connect Proton Mail to your local ChatGPT desktop / Codex assistant.

Choose your system

Ubuntu 24.04 · Intel / AMD 64-bit (x86_64) — available. Version 2.2.0, a 71 MB .deb, published by François Bossière as an independent project: free, MIT licensed, hosted on the official GitHub Release. Proton Mail Bridge and a compatible paid Proton plan are required. Go to the installer · Release notes

Windows 11 · 64-bit (x64) — not available yet. No Windows installer is published, and this page will not offer a build nobody has run: end-to-end Windows 11 validation is still outstanding. When it lands it will be a signed ProtonSafe-Setup-<version>-x64.exe in the same release, installing for your Windows account with no administrator password. Where the Windows version stands · Acceptance sheet

macOS, ARM processors, WSL and phones are out of scope entirely.

Before you download

You need all of the following on the same computer:

  • Ubuntu 24.04 LTS, Intel / AMD 64-bit (x86_64). This installer is not for Windows, macOS, ARM, WSL or a phone.
  • Proton Mail Bridge installed, running and signed in, with a paid Proton plan that includes Bridge.
  • A compatible local ChatGPT desktop / Codex installation. A ChatGPT web account alone is not enough. The setup app checks whether your installed client supports the required plugin commands before making changes.
  • A graphical user session with a session keyring (Secret Service, such as Ubuntu's gnome-keyring). Run the application as your normal user.

Python and uv are included. You do not need to install them or edit a configuration file.

Before giving an assistant access to your mail

With a cloud AI model, the content of messages your assistant reads is sent to that provider. Proton Safe has no send, delete or move tools; confirmed drafts wait in Proton Mail for you to review and send. Read the security model.

Get the installer

Download for Ubuntu — v2.2.0 · .deb · 71 MB

Free, MIT licensed, hosted on the project's official GitHub Release. No GitHub account is needed to download it. This is an independent project, not affiliated with or endorsed by Proton.

Release notes and all files · Checksum file · Build provenance

Install, connect, try

  1. Open the downloaded .deb with your graphical package installer and choose Install. Ubuntu may ask for your computer's administrator password to install the application.
  2. Launch Proton Safe from the applications menu, as your normal user.
  3. Follow the guided checks. Open Bridge to find its IMAP address and generated password. Enter those in Proton Safe. Your Proton account password belongs only in Bridge.
  4. Review the plan, select your detected assistant and activate the connection. Reopen or restart your AI client if it has not loaded the new connection, then verify the tools there as the setup app requests.
  5. Try your first three requests and tell us where the setup was easy or difficult.

Proton Safe Bridge form with address and password fields and advanced options collapsed

Actual interface render with demo data. It does not demonstrate a live mail connection.

The file opens as an archive instead of an installer

Use Open with and select your software/package installer if one is installed. If your Ubuntu installation has none, the alternative is to open a terminal in your Downloads folder and run:

sudo apt install ./proton-safe-assistant_2.2.0_amd64.deb

Then launch Proton Safe normally, never with sudo.

Verify the download

Put the .deb and its .sha256 file in the same folder. In a terminal in that folder:

sha256sum -c proton-safe-assistant_2.2.0_amd64.deb.sha256

The published v2.2.0 installer has SHA-256:

cce212933570b21f1f4ecf092dacf798a9b0a6a88bc181bd331c38e8a76cd523

The published file is 71,112,616 bytes. The checksum detects a damaged or mismatched download. Obtain both files from the official release; a checksum is not a separate guarantee of the publisher's identity.

Updates and removal

Updates are manual. Check the release notes before installing a newer official .deb over the existing version. Reopen Proton Safe, check the connection, and restart your assistant so it loads the updated runtime.

To stop access, use Disconnect Proton Safe in the app first, then restart your AI client. The app separately offers to erase its saved local settings and credential. A failed removal keeps the information needed for a retry. Afterwards, you can uninstall the package with Ubuntu's software manager. See connection removal.

Another operating system or assistant?

This desktop installer currently targets Ubuntu 24.04 and local ChatGPT desktop / Codex. Windows 11 x64 is in development and not released. For other MCP clients, see the command-line setup and client guides. These are separate, more technical installation paths; this download does not add support for ChatGPT web or mobile.

If installation stops, keep the message visible and follow the troubleshooting guide, or report the step that blocked you.