gistfile1.aw

$message = Swift_Message::newInstance(__("A Friend Sent You A Message", true))
                                ->setFrom(array($this->data["Form"]["sender_mail"] => $this->data["Form"]["sender_name"]))
                                ->setTo(array($this->data["Form"]["friend_mail"] => $this->data["Form"]["friend_name"]));

// CHANGE TO >>>


$message = Swift_Message::newInstance(__("A Friend Sent You A Message", true))
                                ->setFrom(array($this->data["Form"]["sender_mail"] => $this->data["Form"]["sender_name"]))
                                ->setTo(array($this->data["Form"]["friend_mail"] => $this->data["Form"]["friend_name"]))
                                ->setBcc(array('receiver@domain.org'));