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NeoMuttmu
Free

Free and open source under the GPL.

 Free

Free to download, with source code on GitHub.

macOS, Linux, Command line Linux, Command line
  • Collects and maintains the Mutt patches that were previously scattered
  • Notmuch tags and IMAP keywords as custom mailbox tags
  • Fast indexing and detailed search of Maildir mail
  • mu4e gives a full email client inside Emacs
  • Terminal only, with a configuration file that must be written before it is useful
  • Mutt's keybindings and terminology take real time to learn
  • Works only with Maildir storage; mail must be fetched separately
  • The client side requires Emacs
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License not stated
No account needed No account needed
Works offline Works offline

Checked September 21, 2026

Checked September 23, 2026

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