Q: changed my email at iTunes, now phone will not allow apps updates

Hello rblacktx,

If you changed your Apple ID (which is an email address), then you should be able to sign out of your iTunes Store account and sign back in with the updated information.  Take a look at the resources below:

Change your Apple ID - Apple Support
http://support.apple.com/en-us/HT202667

Sign in with a different Apple ID on your iPhone, iPad, or iPod touch - Apple Support
http://support.apple.com/en-us/HT203983

Have a great day,

- Judy