Comment 3 for bug 357340

I think this would be great too; I just saw another instance of it in bug 357001. (Though strangely enough the comment is not visible in the bug; maybe it was deleted as spam after the mail was sent?)

It is valid and not all that rare to send a one-word reply to a bug, especially for existing developers.

However, I can't think of any case where someone would set the mail subject to "unsubscribe" or "remove" and not want to be unsubscribed. It's probably common to have some text in the message.