Subtitle: E-mail for users and programmers, Third edition
Author: Jerry Peek
Publisher: O'Reilly
Publication date: April 1995
ISBN: 1565920937
Pages: 782
Price: 34.95 US
WWW book information: http://www.ora.com/catalog/mh3/noframes.html
Besides the obvious, this book also covered the Tk application exmh. According to the publisher, this book has been discontinued.