I'm not sure if I can explain this clearly, but I'll give it a shot. I've tried searching, but haven't come up with anything (guess I'm not using the right terms, or this is a rare issue or a non-issue). I'm running iOS 6 on my 4th gen iPod Touch and Mountain Lion on my 2011 MacBook Air. I am using the default mail applications on both. I have the same two mail services on each (a university e-mail and an AOL email [I know, haha AOL, but I've had the address since the 1990s and it's too well-established to get rid of]). The "Fetch new data" setting in iOS is set as "Push" with "Fetch" as "Every 15 minutes". Here's the issue: When I get a notification of a piece of mail and I check it on my MacBook Air - either deleting it, saving it, or simply reading it - the notification for that piece of mail (the red circle with a number) stays on my iPod requiring me to open the mail app in iOS and refresh the mailbox to get rid of it. The notification never disappears on my iPod unless I do this, no matter how long I wait. The funny thing is, if I do this the other way around - reading the mail on my iPod - the notification automatically disappears on my Mac's Mail app, as it's supposed to. What am I doing wrong? Is this normal? This has been happening as long as I can remember but it is starting to become increasingly annoying.