32BitsOnline: Mutt: A Unix Mailer for Experts

Author Jon Lasser reviews the popular GPL’d mail

“If… you consider yourself an intermediate or expert user,
adept with procmail and regular expressions, then Mutt could be the
mailer for you. Mutt offers… threading, color highlighting of
words and phrases, excellent MIME and PGP support, ‘hooks’ which
let the user change defaults automatically based on various
parameters, scoring, built-in POP3 and IMAP support, and nearly
infinite configurability.”

Complete review