All features of the script are listed at the top of the page. Blocking certain emails or usernames are features that can be added that latter being a little more involved. Some things like blocking certain emails is not a big deal to implement if requested when purchasing the script. Larger modifications to the script would require paying for the time it would take to create the modification.

__________________

Register/Login Script
Do you use a Password Protected Directory? Need a way to allow users to make their own account, try my .htaccess Login Script