An email as my name on other people's phone, iOS7 update
The first thing that comes to mind would be if messages is set (or became reset during the iOS 7 upgrade) to start new conversations from your Apple ID email instead of your phone number.


Open Settings app
Swipe up and tap Messages
Tap Send &amp; Receive
Verify that the checkmark is next to the phone number


You'll want to watch for errors like I have below where the messages is still waiting for activation. (That might force it to send as your Apple ID until the activation finishes.)



Set the "Caller ID" or send as email or phone: