Compare software

MailMateFMail3
Freemium

Uses a license key model, and the developer describes a Free Mode.

 Free

Downloadable from the developer's site; the homepage does not list a price.

macOS macOS
  • Extensive keyboard control
  • Markdown email composition
  • Native macOS windows and tabs with session restore
  • Not built on Electron
  • macOS only
  • Current 2.0 version is still a beta
  • Works only with Fastmail accounts
  • Unofficial and not made by Fastmail
Downloadable app Downloadable app
Closed source Closed source
License not stated License not stated
No account needed Account needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked October 2, 2026

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