Well both messaging apps are installed so both will have the message. I only get notified by the Mms.apk I installed and deleting messages from it deletes them from the stock Text Messaging app. on the stock app I disabled notifications and auto-retrieve. I wasn't a fan of the stock one, tried go-sms pro but wasn't thrilled with it either. My primary desire was changing the color of the notification LED when getting a text versus what I get when receiving an email. My Mms.apk does that....so texts notify me with multiple rapid short vibrations and a blue LED while emails notify me with the standard double vibrate and green LED.