The "Mail User's Shell" (MUSH) is a "Mail User Agent" (MUA) that is designed to manage electronic mail on most UNIX systems. That is, mush is used by users to read mail, sort it, edit it, delete it, or use it to act as an interface to send mail to others. A Mail Transport Agent (MTA) is the program which mush communicates with that actually -delivers- mail. Mush is copyright (c) 1986, 1987, 1988, 1989, 1990, 1991 by Dan Heller. All Rights Reserved. This software is not in the public domain.