Fix importing
Fix infinite loops with onDisable()
Cleanup
Letter -> OLDLetter
Implement many of the snail mail features
{{}} -> new ArrayArraylist
Add registration and login
Add missing documentation
Re-implement importing from xMail
Add mail processing to MailWaiter
Display sender of mailing list mail correctly
Fix sending of mailing list mail
Already done
Move some things around
Add callback support - Not tested for spam