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BalsaEvolution
Free

Free and open source under the GPL.

 Free

Free and open source, part of the GNOME project.

Linux Linux
  • Lightweight native GTK interface
  • Fits in with the GNOME desktop
  • Mail, calendar, contacts and tasks in one program
  • Exchange Web Services plugin connects to Microsoft 365
  • Linux only
  • Smaller feature set than full PIM suites
  • Linux only
  • Heavier than a mail-only client, and slower to start
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0-or-later License: GPL-2.0-or-later and LGPL-2.1-or-later
No account needed No account needed
Not stated if it works offline Works offline

Checked September 24, 2026

Checked September 21, 2026

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