I signed up for yahoo mail and then set up my iPhone with it. The push part of IMAP is sporadic. I can't tell if it is the phone or yahoo but half the time I get an email as soon as its sent but the rest of the time it pops up in my other accounts and iPhone doesn't have it and only receives it when it manually checks. Anyone else have this problem. I never had this problem with fastmail.fm but their storage is only 16 mb. Thanks!