here is the sms/mms verizon message fix. Install this cab and you wont get anymore of those stupid notifications.
Remove sms sent notification pop up
CAB file for the regedits:
http://forum.xda-developers.com/showthread.php?t=561443
RegEdits (if you want to do it manually):
HKLM\Software\Microsoft\Inbox\Settings SMSNoSentMsg = 0
HKCU\ControlPanel\Notifications\Default Options = 0
HKCU\Software\Microsoft\Inbox\Settings DisableSMSDeliveryReceipt = 0
Soft reboot