Email apps generally have ‘Reply’ and ‘Reply to all’ as options for responding. But I crave an extra option: Reply to all as CCs. This would put the original sender on the To line and all of the original To recipients as CCs (except me obviously).

This contrasts with the usual reply all behaviour which puts all original To recipients on the To line, which is often not what I want, even though they were all on the To line of the original. Maybe I’m just strange.