Amazingly, not a lot has been written about MH. This book is the first work of this depth that I know of. Here are some ways to find out more about MH.
The MH distribution has a directory called papers with tutorials, detailed descriptions of applications, and related programs. MH also comes with an Administrator's Guide, a good place to learn about installing MH and to discover some of its inner workings.
MH is written in the C programming language. One way to find out what it does is in classic UNIX hackers' style: read the code. Most of the code is clean and modular.
Here are some World Wide Web pages for the software.
If you read the Usenet "netnews," the comp.mail.mh newsgroup is a good place to read about MH -- and post questions, if you have them. One place to read and post, as of mid-2003, was Google Groups at http://groups.google.com/.
The old mh-users and mh-workers mailing lists have been disabled. Articles from these mailing lists have been archived at SourceForge.
The rand-mh-devel@lists.sourceforge.net mailing list is used by anyone interested in any aspect of the rand-mh project at SourceForge, which includes this book. This list also receives bug reports, feature requests, bugs, and check-in messages.
Here are two of the mailing lists about nmh:
Here are three mailing lists for exmh:
From: your-address@somewhere.com
To: exmh-announce-request@redhat.com
Subject: subscribe
What's in the body doesn't matter.
To join a mailing list about MH-E, go to
http://sourceforge.net/mail/?group_id=13357.
The FAQ or Frequently Asked Questions document that is posted to comp.mail.mh every month is an excellent source of information. There you can read about often encountered problems and their solutions, as well as interesting tricks. A partial list of what's covered includes: