Is there anyway to turn off e-mail alerts (sound and vibrate) during specific times of the day? I like having the alerts on during the day but I don't need my phone to ding 10 times throughout the night. I do need to leave the volume on though b/c I do get some important calls in the middle of the night. It is a real pain to turn off the alerts every night and then have to turn them on during the day but I haven't figured out any other way. I'd have to imagine that somebody else thought of this before. Thanks.