public function sendAdminNotification()
    {
        $subject = _t(
            'SilverShop\ShopEmail.AdminNotificationSubject',
            'Order #{OrderNo} notification',
            '',
            array('OrderNo' => $this->order->Reference)
        );

        $email = $this->buildEmail('SilverShop/Model/Order_AdminNotificationEmail', $subject)
            ->setTo(Email::config()->admin_email);

        if ($this->debugMode) {
            return $this->debug($email);
        } else {
            return $email->send();
        }
    }