Compare software

iCloud MailProton Mail
Freemium

Free with an Apple Account, with more storage on paid iCloud+ plans.

 Freemium

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

macOS, iOS, Web Windows, macOS, Linux, Android, iOS, Web
  • Built into Apple devices
  • Web client for use on any computer
  • End-to-end encrypted email by default
  • Apps for iOS, Android, macOS, Windows, Linux and the web
  • Requires an Apple Account
  • Best experience is on Apple hardware
  • Only works with a Proton account
  • Desktop apps need a paid plan after the trial
Web application, Hosted service Downloadable app, Web application, Hosted service
Closed source Closed source
License not stated License not stated
Account needed Account needed
Not stated if it works offline Not stated if it works offline

Checked September 24, 2026

Checked September 23, 2026

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