I've set up a Yahoo email account and a Gmail account through the Mail app on my iPhone, but I don't consistently get push notifications for my emails for either account! If I go under Advanced in the mail settings, both accounts are set to push (I know Gmail doesn't have native push, so I set up the Gmail account thru Exchange, so it should have push). What else can I check/change to get email notifications instantly to my phone? Its very frustrating having to check the mail app throughout the day to update my emails...