MH

At A Glance  

  Package Name: MH 
  Latest Version: 6.8 
  Developer/Author: Many. Includes RAND Corp.,
                    University of California Irvine.
  Maintainer:  John Romine <Bug-MH@ics.uci.edu>
  Availability: FTP from,
     anonymous@ics.uci.edu[128.195.1.1]:pub/mh/mh-6.8.tar.Z 
  Sources: Yes
  Platforms: UNIX
  Support: comp.mail.mh includes a Frequently Asked Questions (FAQ). 
  Folder Format: individual files
  Features: Very rich in features. Very customizable. Very extendible.
            Higher layer X11 and Emacs user interfaces to MH are
            also available.

• From: "UNIX EMail Software - a Survey"

  The big difference between MH and most other mail user agents is that you can use MH from a UNIX shell prompt. In MH, each command is a separate program, and the shell is used as an interpreter. So, all the power of UNIX shells (pipes, redirection, history, aliases, and so on) works with MH--you don't have to learn a new interface. Other mail agents have their own command interpreter for their individual mail commands (although the MUSH mail agent simulates a UNIX shell). Mail messages are stored in individual files.