Not Interested

Close this ticket AND stop the sender, in one action.

Frederick, 2026-07-28: "we need a way to flag it so it closes the ticket but also marks it as something we're not interested in, so if we get more email like that it automatically ignores it -- we don't have to do it more than once."

Both halves in one transaction. A close that did not suppress leaves the next newsletter to be closed by hand; a suppression that did not close leaves the ticket sitting in the queue. Half of this action is worse than none of it, so neither half lands alone.