With the help of the single key you can refresh your entire gmail account...
From the keyboard just simply press the ‘F5’ Key on your keyboard. Pressing the ‘F5’ Key refreshes the inbox automatically..
I second this request.
Data sync eats up battery so I turn it off.
Well, I have to open gmail, menu, refresh.
You'd think there'd be an app for that, just hit it and it refreshes your gmail.