//                                                                         Entry Point
    //                                                                         ===========
    public static LogNotificationPostcard droppedInto(Postbox postbox, MPCall<LogNotificationPostcard> postcardLambda) {
        LogNotificationPostcard postcard = new LogNotificationPostcard();
        postcardLambda.write(postcard);
        postbox.post(postcard);

            try {
                SMailCallbackContext.setPreparedMessageHookOnThread(notificationHelper::send);
                LogNotificationPostcard.droppedInto(postbox, postcard -> {
                    postcard.setFrom(fessConfig.getMailFromAddress(), fessConfig.getMailFromName());
                    postcard.addReplyTo(fessConfig.getMailReturnPath());

                final NotificationHelper notificationHelper = ComponentUtil.getNotificationHelper();
                SMailCallbackContext.setPreparedMessageHookOnThread(notificationHelper::send);
                CrawlerPostcard.droppedInto(postbox, postcard -> {
                    postcard.setFrom(fessConfig.getMailFromAddress(), fessConfig.getMailFromName());
                    postcard.addReplyTo(fessConfig.getMailReturnPath());

        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final Postbox postbox = ComponentUtil.getComponent(Postbox.class);
        try {
            TestmailPostcard.droppedInto(postbox, postcard -> {
                postcard.setFrom(fessConfig.getMailFromAddress(), fessConfig.getMailFromName());
                postcard.addReplyTo(fessConfig.getMailReturnPath());