Require Email Confirmation for New Registrations

In my old theme before I implemented GD Modern and most of the WPGeodirectory extensions I used to have a function that required users to confirm their email address prior to their account being activation. I have the user role editor set such that new users default to “contributor” level. Since I moved to the new theme I am missing the code from within the functions.php. Is there an easy way to require new users to confirm their email when they register either through the widget or the gd-login page?