I'm using an iPad Air 2 with the latest iOS 10.3.3. Mail says I have 3,684 unread messages in one of my pop accounts but when I go to the account or to unread messages, they're not there. I heard they're called ghosts. Which seems appropriate. I read the instructions for getting rid of them on appletoolbox but no joy. I tried everything. I checked online to make sure there were no unread messages, though the issue isn't with Gmail which is the only mail with a constant connect. I tried following the instructions 6 times rebooting after each step. Every time... 1. turn the account off, 0 unread messages (of course), 2. reboot, 3. turn it back on... still 3,864 unread messages, 4. Rinse and repeat 5x more. I even tried turning off SSL as one reader suggested. Did that a few times too. Nada. Messages still not there but Mail says they are. I even tried deleting the account altogether, then re-adding it. Nope. Stil those darn unseeable unread messages. I am at a complete loss of what to do now. Can someone help?