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Mutt vs Cone: catalog facts
Mutt	Cone
Free Free and open source.	Free Free open-source software.
macOS, Linux, Command line	Linux, Command line
Keyboard-driven and fast Works well over SSH	Multiple IMAP and POP3 accounts plus local maildirs Built-in editor with spell checking
Steep learning curve No graphical interface	Text-only interface Images and PDFs need external viewer programs
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	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.