under admin_approval_email function you need to edit the code…
$args = array(‘role’ => ‘Administrator’);
$grabuser = get_users($args);
foreach ($grabuser as $user) {
$array[] = $user->user_email;
}
$to = apply_filters(‘new_user_approve_email_admins’, array_merge($array,array(get_option(‘admin_email’))));
$to = array_unique( $to );
everytime user register all user with role Administrator will get email notification
yes,it’s possible,edit code on new-user-approve.php