Does anyone know why and how to fix this annoying bug with iOS 9 that keeps happening to me? Ever so often mail wants to tell me I have 1 unread message but there is one. I verify on the mail server and multiple PCs that there isn't a hidden message somewhere that is causing mail to think there is one but nothing is found. In the past I am forced to remove the accounts then set them back up again the set folder notifications on the different accounts. Does anyone have a different fix? Also if it happened once it wouldn't be that big a deal 5-6 times is starting to get old.