Compare software

getmail6 vs fdm: catalog facts
getmail6	fdm
Free Free and open source.	Free Free, with the source code published on GitHub.
macOS, Linux, Command line	macOS, Linux, Command line
Supports POP3, IMAP and their SSL variants Delivers to maildir, mbox or an external MDA	Combines fetching and filtering in one program Delivers to Maildir, mbox, IMAP, LMTP or a pipe
Command line and config files only Retrieves mail but does not send or display it	No interface for reading mail Configuration takes time to learn
Downloadable app	Downloadable app
Open source	Open source
License not stated	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked October 1, 2026

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