[Request] PM Forwarding

[Holidazed]

I run a site that allows users to have multiple accounts. What I would like to see is an option to allow the user to forward all pm's from one account to another account. The features should include the following.

1. Forward all pm's to account of your choice
2. When #1 (above) is done, a notification pm goes to the recieving account
3. When #2 (above) is done, the recieving account must do something (not sure what) to allow the pm's to be accepted from the other account.
4. An option on the recieving account to stop accepting forwards from a particular account (in case of multiple forwards to the same account).
5. An option in the ACP to allow/disallow forwards.
6. User/usergroup forwarding control (be able to turn on/off forwarding for a particular usergroup and/or user).

Ideas?