public function EmailAvailable($Email = '') {
		$this->_DeliveryType = DELIVERY_TYPE_BOOL;
      $Available = TRUE;

      if (C('Garden.Registration.EmailUnique', TRUE) && $Email != '') {
         $UserModel = Gdn::UserModel();
         if ($UserModel->GetByEmail($Email))
            $Available = FALSE;
      }
      if (!$Available)
         $this->Form->AddError(sprintf(T('%s unavailable'), T('Email')));
         
      $this->Render();
	}