TODO

• bugs!
  • messy permissions, we should set some umask (we'd like group-writable mailstore)
    • umask 0007; and a chmod -R g+s store seem to work well enough for my installation
  • maybe auto-mkpath for ::MailStore::FS?
• 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
• qmail-compatible wrapper (to map exit codes)
  • requires exceptions to be thrown by the various pieces