Settings -> Mail, Contacts... -> Mail Account -> Account -> Advanced -> Move deleted mails to trash/archive.
Awesome, now seeing delete on all. Also if I just swipe completely and it disappears this means it deleted right?
The swipe options in the mail setting however don't match what it's doing. For example I swipe left to delete/archive but the settings menu says that flags the item. Also swipe right options have more options thn swipe left. Is this just me?