public function onBeforeSend()
    {
         if(!isset($this->__added_sent_by_stamp)){
            $this->body .= "\n\nSent Using Surebert Mail"
                ." recorded: \nSending IP: " . \sb\Gateway::$remote_addr
                . " \nSending Host: " . \sb\Gateway::$http_host;

            if (!empty($this->body_HTML)) {
                $this->body_HTML .= '<br /><br />'
                    .'<span style="font-size:10px;color:#BCBCBC;margin-top:20px;">'
                    .'Sent Using Surebert Mail:'
                    .'<br />Sending IP:' . \sb\Gateway::$remote_addr
                    .' <br />Sending Host: ' . \sb\Gateway::$http_host. '</span>';
            }
            
            $this->__added_sent_by_stamp = true;
        }
        
        return true;
    }