I am using mutt to read emails from 2 accounts Gmail and Yahoo. I notice that if I mark, for example, 3 of my yahoo emails for deletion, and then press, say F2, to switch to Gmail, Mutt will ask me whether I want to purge those 3 messages before syncing the yahoo account; it will not switch to gmail until the next F2 press though.
However, Mutt will not ask the same question if I mark some Gmail emails to delete and switch to yahoo; it automatically expunges the marked-to-be-deleted messages. If I press the dollar symbol $ or quit Mutt, it will still ask to purge messages.
Why is the difference?