Compare software

Tuta MailProton Mail
Freemium

A free plan is available, with paid plans that support custom domains.

 Freemium

Free accounts work in the mobile and web apps; the desktop apps are offered as a free…

Windows, macOS, Linux, Android, iOS, Web Windows, macOS, Linux, Android, iOS, Web
  • End-to-end encrypted email
  • Includes calendar and contacts
  • End-to-end encrypted email by default
  • Apps for iOS, Android, macOS, Windows, Linux and the web
  • Requires a Tuta account
  • Custom domain support is part of paid plans
  • Only works with a Proton account
  • Desktop apps need a paid plan after the trial
Downloadable app, Web application, Hosted service Downloadable app, Web application, Hosted service
Open source Closed source
License not stated License not stated
Account needed Account needed
Works offline Not stated if it works offline

Checked October 8, 2026

Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.