Ability to filter/group Messages by Sender Email

If, for whatever reason, you need to change the email address from which messages are sent out of OP, there's currently no way to filter/group those messages to find out who is sending what......

1. Need to Have - It'd be nice to be able to filter/group messages by sender email

2. Nice to Have - It'd be even better if you were able to change the message send from email as a Group Action

Thanks in advance,

Cameron