A Jinx tutorial in Postscript. The LaTeX source is in jinx.shar.gz. Jinx is a package for maintaining simple databases. This one should be able to extract almost all lharc archives. Here are the sources of the mail-server program written by Johan Vromans .
Documentation is included.
Rich Burridge's mp program will pretty print various files for you. It can e.g. be used in conjunction with a mail reading utility for producing a pretty print of your mail items. It's version 2.4 PL14, dated Nov 1, 1990. It's the 1.0PL5 version. The distribution includes a User Manual and an explanation of design concepts.