Heirloom mailx (previously known as nail) is a mail user agent derived from Berkeley Mail 8.1 and is intended to provide the functionality of the POSIX.2 mailx command with additional support for MIME messages, POP3, and SMTP. Maintainer: William Yodlowsky <bsd@openbsd.rutgers.edu> WWW: http://heirloom.sourceforge.net/mailx.html