public function sendMessageNotification(Message $message, User $user)
    {
        $forum = $message->getSubject()->getCategory()->getForum();
        $notifications = $this->notificationRepo->findBy(array('forum' => $forum));
        $users = array();

        foreach ($notifications as $notification) {
            $users[] = $notification->getUser();
        }

        $title = $this->translator->trans(
            'forum_new_message',
            array('%forum%' => $forum->getResourceNode()->getName(), '%subject%' => $message->getSubject()->getTitle(), '%author%' => $message->getCreator()->getUsername()),
            'forum'
        );

        $url = $this->router->generate(
            'claro_forum_subjects', array('category' => $message->getSubject()->getCategory()->getId()), true
        );

        $body = "<a href='{$url}'>{$title}</a><hr>{$message->getContent()}";

        $this->mailManager->send($title, $body, $users);
    }