The user's status should be included in the email

$user = user_load($uaccount->uid);
$variables['!approved'] = $user->status ? 'approved': 'blocked';

Those two lines just need to be added in the user_register_notify_mail function...

Depending on site configuration, a lot of accounts can be created automatically for non-sensitive roles, but where certain roles require additional processing.

Putting the status in the email will let the administrator know if he really needs to get off the couch and go look at this user, or if the system is already handling it.