Mutt is a text based email client to be used inside of a terminal emulator.
Ranked in these QuestionsQuestion Ranking
Pro Terminal based
Pro Small and efficient
Pro Highly configurable macros
Pro Threads emails
Pro Active development
Even though it was first released in 1995, Mutt still enjoys an active community following it and having new releases constantly.
Pro Work with regular expressions
Mails can be filtered, deleted, flagged, etc. with regular expressions which makes mail management very efficient.
Pro Compose mails in your favorite editor
Edit mails efficiently with an editor you already can work fluently with.
It runs inside the terminal so it doesn't display HTML email, fonts, or graphical elements.