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isyncgetmail6
Free

Free and open source under the GPL.

 Free

Free and open source.

Windows, macOS, Linux, Command line macOS, Linux, Command line
  • Much faster than Python-based synchronisers on large mailboxes
  • Precise control over which folders sync and in which direction
  • Supports POP3, IMAP and their SSL variants
  • Delivers to maildir, mbox or an external MDA
  • Configuration syntax is terse and mistakes can delete mail
  • Command line only
  • Command line and config files only
  • Retrieves mail but does not send or display it
Downloadable app Downloadable app
Open source Open source
License: GPL-2.0 License not stated
Not stated if an account is needed No account needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 24, 2026

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