Carbon copy feature. If you like to send a copy of your game messages to another email address. This will be mandatory in some official tournaments to avoid cheating. Also, you can set up a webemail account where to send this copies. Copy to self feature.
Some people likes to send a copy of their messages to their own email address.
Backup menu option. To create an archive with your games and mail files. Send messages using your default mailer. HTML messages can be viewed with your default browser SMTP and POP3 engines code has been rewritten. Now they may work better and faster.