Unofficial desktop client for ProtonMail and Tutanota end-to-end encrypted email providers


is built with Electron unofficial desktop app for ProtonMail and Tutanota E2E encrypted email providers. The app aims to provide enhanced desktop user experience enabling features that are not supported by the official in-browser web clients.

Build Status: Linux / MacOS Build status: Windows



Linux/OSX/Windows installation packages download page is here.


  • Cross platform, Linux/OSX/Windows.
  • Multi email providers support.
  • Multi accounts support per each email provider. Individual entry point domain selection is enabled.
  • Automatic login into the app with remembered master password using keytar module ("Keep me signed in" feature).
  • Automatic login into the email accounts, including filling 2FA tokens.
  • Encrypted settings storage with switchable predefined key derivation and encryption presets. Argon2 is used as the default key derivation function.
  • Native notifications for individual accounts clicking on which focuses the app window and selects respective account in the accounts list.
  • System tray icon with a total number of unread messages shown on top of it. Enabling local messages store improves this feature (how to enable), see respective issue.
  • Switchable view layouts (full, tabs and dropdown). See details here and screenshots in images folder.
  • Batch emails export to EML files. Feature released with v2.0.0-beta.4 version, requires local messages store feature to be enabled (how to enable).
  • Full-text search. Enabled with v2.2.0 release.
  • Option to use a built-in/prepackaged web client instead of loading the online page. The built-in web clients are built from source code, see respective official Protonmail and Tutanota repositories. See original issue for details.
  • Start minimized to tray.
  • Close to tray.

How to build package from source code

  • Regardless of the platform you are working on, you will need to have Node.js v10 installed. v10 as it's recommended to go with the same Node.js version Electron comes with. If you already have Node.js installed, but not the version 10, then you might want to use Node Version Manager to be able to switch between multiple Node.js versions:
    • Install NVM.
    • Run nvm install 10.
    • Run nvm use 10.
  • Some native modules require node prebuilds files compiling and for that Python and C++ compiler need to be installed on your system:
    • On Windows: the simplest way to install all the needed stuff on Windows is to run npm install --global --production windows-build-tools CLI command. Tutanota and ProtonMail web clients projects require bash for building, so a few more steps need to be fulfilled:
      • Install bash then check the path of bash ex: C:\\Program Files\\git\\bin\\bash.exe.
      • Execute npm config set script-shell "C:\\Program Files\\git\\bin\\bash.exe" command.
    • On Linux: python v2.7, make and a C/C++ compiler toolchain, like GCC are most likely already installed. Besides keytar needs libsecret library to be installed.
    • On Mac OS X: python v2.7 and Xcode need to be installed. You also need to install the Command Line Tools via Xcode, can be found under the Xcode -> Preferences -> Downloads menu.
  • Clone this project to your local device. If you are going to contribute, consider cloning the forked into your own GitHub account project.
  • Install dependencies running yarn.
  • Build app running yarn run app:dist. It's better to not touch a mouse during the process, since it might interfere with the e2e tests running at the end of the process.
  • Build a package to install running yarn run electron-builder:dist command to build Windows/Mac OS X package and one of the following commands to build Linux package:
    • yarn run electron-builder:dist:linux:appimage
    • yarn run electron-builder:dist:linux:deb
    • yarn run electron-builder:dist:linux:freebsd
    • yarn run electron-builder:dist:linux:pacman
    • yarn run electron-builder:dist:linux:rpm
    • yarn run electron-builder:dist:linux:snap
  • If you don't need a package to install, but a folder to execute app from, simply run yarn run electron-builder:dir command.
  • Binary executable, whether it's a folder or package to install, comes into the ./dist folder.

To recap, considering that all the described build requirements are met, the short command to build let's say Arch Linux package will be yarn install && yarn run app:dist && yarn run electron-builder:dist:linux:pacman.

Removing the app

It's recommended to perform the following actions before uninstalling the app:

  • If you had the Keep me signed in feature enabled (see screenshot), click Log-out action in the app menu (see screenshot). That will remove locally stored master password (done with node-keytar). You can also remove it having the app already uninstalled, but that would be a more complicated way as you will have to manually edit the system's keychain.
  • Remove settings folder manually. You can locate settings folder path clicking Open setting folder app/tray menu item (see screenshot) or reading app.getPath(name ="userData") related app.getPath(name) section here.

Something missing? Edit this app.