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mblazeGNU Mailutils
Free

Free, with the source code published on GitHub.

 Free

Free and open source under the GPL-3.0-or-later license.

macOS, Linux, Command line Linux, Command line
  • Small composable commands that work in shell pipelines
  • Works directly on standard Maildir folders
  • Works with local and remote mailbox formats
  • Includes mail reading, retrieval and filtering utilities
  • No graphical or full-screen interface
  • Needs a separate program to fetch and send mail
  • Primarily a command-line and server-side package
  • Library components are aimed at developers integrating mail handling
Downloadable app Downloadable app
Open source Open source
License not stated License: GPL-3.0-or-later
No account needed Not stated if an account is needed
Works offline Not stated if it works offline

Checked October 1, 2026

Checked October 8, 2026

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