Pegasus Mail is a free e-mail client that can be used by single or multiple users on individual computers or local area networks. It is an extremely powerful, feature-filled client that sometimes gets overlooked in the market.
Some of the basic features include:
-Mail filtering
-Support for multiple identities
-Support for all Internet mail protocols, including SMTP, POP3, IMAP4, LDAP and PH.
-Along with the basics comes the same kind of support that is found in the better-known -e-mailers, including Spell check with UK and U.S. English dictionaries, a powerful encryption interface with support from PGP, and support for multiple POP3 and IMAP mailboxes.