A new module for X-Cart 5 has been released - "Verified Users
With this module you can:
1. Help customers to avoid misprints by asking them to type their email address twice when registering on the site.
2. Require new customers to confirm their account by following a special link sent to their email address after registration.
3. Enable account moderation so that an administrator must validate new user profiles before letting the customers sign into their accounts on the site.
You can turn all the three features on at the same time, or enable only those that you need.
Feel free to ask in this forum thread should you have any questions or suggestions regarding the module.