# TODO
* list footer
* append to plain text single part
* or add a plain text (or HTML?) part if multi-part
* how do we deal with signed messages?
* seems to be a hard problem:
http://www.ietf.org/mail-archive/web/ietf-smtp/current/msg01078.html
* there's this script
https://stuff.mit.edu/~jik/software/mailman_mimedefang/
https://stuff.mit.edu/~jik/software/mailman_mimedefang/mailman_mimedefang_fix_footer.pl.txt
* I'll probably go the stupid / simple way: just append text to the
whole body, and MIME be damned
* list messages in the mailstore / held for moderation
* qmail-compatible wrapper (to map exit codes)
