Ability to add (temporarily) a forward to existing account without deleting that account
I frequently have customers that want to temporarily forward email from one account to another for various reasons. Whenever I try to do this within ISPconfig it errors out saying that "an account with this name exists" when I try to create the forward. I don't want to have to back up the user's maildir, and delete the account just to set up a forward for a couple of days, only to have to delete the forward, recreate the account and restore their maildir.
a) forwarding of an existing account should be allowed b) this should be accessable from within the email account itself (much like the send a copy to functionality)