One of the features that I have been asked for multiple times is the ability to use email@example.com commands at firstname.lastname@example.org time. I have now implemented this with the following syntax:
Package: foo Version: 1.0-3 Control: retitle -1 this is the title Control: severity -1 bleargh Control: summary -1 0 Control: forward -1 http://bugs.debian.org/nnn
In short, you preface any control commands with Control:, -1 is the current bug, and the rest of each line is the control@ grammar you already know. This also now works for every kind of message to email@example.com with the exception of messages received at nnn-done and nnn-forwarded. I don't know why you'd use it for anything else but submit@ messages, but hey, whatever works.