/**
* register a new subscriber to a mailing list
* @param [type] $email [description]
* @param [type] $listName [description]
* @return [type] [description]
*/
public function subscribe($email, $listName, $formData = [])
{
$user = new UserMailer($this->chimp);
return $user->subscribe($email, $listName, $formData);
}
