My main email source is gmail...I have three different accounts. I'm presently using UD, but this same issue has happened with other ROMs. There are times when it shows there is a new email, but the new email doesn't actually show in the INBOX. The only way I can see it is to go on my computer and log into my account or to look into the label of ALL MAIL. I try to delete it from ALL MAIL and there is still a number by the INBOX indicating there is a new email. This doesn't happen all the time, but quite frequently...any ideas. Thx!