This modification changes the registration pages so that the user has to confirm their email address via a link sent to their email. The user can not log in until the email address has been validated.
Full Details and screenshots
https://forums.ysmods.com/index.php/files/file/36-new-user-email-confirmation/
Full Details and screenshots
https://forums.ysmods.com/index.php/files/file/36-new-user-email-confirmation/