This would be really useful, as currently we must have lots more admins than we'd like because many people need to edit mailboxes (we use FogBugz for our customer support).
We use the auto reply feature to send product specific responses to customers who submit a case via e-mail into Fogbugz.
These need updating regularly when we want to make customers aware of a new issue, fix, Answerbase article or update to help them out, so it is useful if the support guys have permissions to edit the text.
