I have mail set to check every half hour, but this doesn't always happen. I never know of there is any mail unless I run the mail app and go to the in box of an account. It then checks and downloads mail. It definately doesn't check itself. The yahoo account does check but that must be because it is a push account. Any ideas why the .mac and gmail don't check automatically? I have had my phone replaced twice for other reasons and every phone has done this.