--- Scripting files for shell-based Internet mail transfer ---
69mail.zip     Citadel+ script for fetching packets and mailing them.
mail69         UN*X shell script for mailing packets.

--- Filtering configuration files for automatic decoding ---
filter-rules   Example rules for the Elm Filter program.
rc.mail69      Example rc file for the ProcMail program.

--- Other sources of info (might not be latest) ---
dos-apps.txt   DOS-based Internet software (mainly Demon/KA9Q)
filtering.txt  Mail filtering FAQ
rfc821.txt     SMTP (Simple Mail Transfer Protocol)
rfc822.txt     E-mail message format (especially headers)