Duplicate emails and Network Notification Sound

There are two main things that are killing me atm...

1. If I send an email to myself on the gmail app I'll get duplicates instead of one... WHY IS THAT!?! i tried everything I can think of to stop it...

2. My phone all of a sudden started doing a audible notification when I do or don't have a network signal and it's driving me nuts... I looked everywhere in setting. I seem to remember a settings where you can shut off the notification sound off. As of now I have "notification sounds" off.

For reference I'm on 5.1.1 thanks for your help in advanced.

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Enjoy.

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