Gravity Forms Notifications Delay

<?php
/*
    WRITTEN BY MJDIGITAL: http://www.mjdigital.co.uk/blog/

    CAPTURE AND STORE NOTIFICATIONS - THEN STOP THEM BEING SENT OUT
    UNTIL THEY CAN BE TRIGGERED MANUALLY / VIA ANOTHER PROCESS

*/


/*
    ADD IN CUSTOM TABLE TO CAPTURE NOTIFICATIONS
    YOU MAY WANT TO REMOVE THIS BIT
*/
global $wpdb;
$addTable = $wpdb->query("CREATE TABLE IF NOT EXISTS `mj_form_notifications` (
  `mj_mail_id` int(11) NOT NULL AUTO_INCREMENT,
  `mj_mail_lead` int(10) NOT NULL,
  `mj_mail_data` text NOT NULL,
  `mj_mail_timestamp` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP,
  `mj_mail_sent` int(11) NOT NULL DEFAULT '0',
  `mj_mail_send_errors` text,
  PRIMARY KEY (`mj_mail_id`),
  KEY `mj_mail_lead` (`mj_mail_lead`)
) ENGINE=MyISAM  DEFAULT CHARSET=latin1 AUTO_INCREMENT=1 ;");
/*
    END TABLE CREATION - AGAIN YOU CAN REMOVE THE ABOVE IF YOU WANT TO
    MANUALLY INSTALL/SETUP YOUR TABLE OR ADD THE DATA TO THE ENTRY
*/


/*
    ADD HOOKS
*/

/*
    #############################################################
    HOOK MAIL TO CAPTURE AND DISABLE NOTIFICATIONS
    #############################################################
*/
add_action("gform_entry_created", "post_submission_handler");
function post_submission_handler($lead){
    global $wpdb;

    // ENTRY ID
    $leadID = $lead['id'];
    $_POST['lead_id'] = $leadID; // Add the Lead ID to the global post variable so it can easily be retrieved in the filter

    // filter function to capture notification and then stop them going out
    function mj_capture_mail($atts) {
        global $wpdb;
        // recieves a compact array containing: $to, $subject, $message, $headers = '', $attachments = array()
        extract($atts);

        // Get lead ID
        if((isset($_POST['lead_id']))&&(intval($_POST['lead_id']))) {
            // Store emails against lead
            $sql = "INSERT INTO mj_form_notifications (
            mj_mail_lead,
            mj_mail_data
            ) VALUES (
            ".intval($_POST['lead_id']).",
            '".mysql_real_escape_string(serialize($atts))."'
            )";
            // INSERT NOTIFICATIONS
            $insert = $wpdb->query($sql);
            // blank the email to stop it going through this time
            $atts = array('to' => '','subject' => '','message' => '','headers' => '','attachments' => array());
        } else {
            // no lead ID - do nothing to just pass the emails through as normal
        }
        return $atts;
    }
    add_filter('wp_mail','mj_capture_mail',1,1); // Add the above function to filter wp_mail
}

/*
    #############################################################
    REMOVE MAIL HOOK TO ENSURE MAIL WORKS AS NORMAL FOR OTHER FUNCTIONS
    #############################################################
*/
add_action('gform_after_submission', 'post_creation_and_confirmation', 10, 2);
function post_creation_and_confirmation($entry, $form) {
    remove_filter('wp_mail','mj_capture_mail',1,1);
}


/*
    #############################################################
    MANUALLY TRIGGER MAILS TO BE SENT
    #############################################################

    The function below can be called whenever you want to send out
    the stored notifications for a particular lead/entry

    Personally I call this once I get the IPN back from the payment
    gateway telling my site that a payment has gone through successfully

    NOTE: A lead ID is required - this is the entry ID for the
    particular form submission
*/
function mj_send_notifications($leadID) {
    if((isset($leadID))&&(intval($leadID))) {
        global $wpdb,$ts_mail_errors,$phpmailer;
        // FETCH EMAIL/S
        $emails = $wpdb->get_results("SELECT * FROM mj_form_notifications WHERE mj_mail_lead = ".intval($orderid),ARRAY_A);
        if(count($emails)) {
            $errors = array();
            foreach($emails as $email) {
                $mailData = @unserialize($email['mj_mail_data']);
                $mailID = $email['mj_mail_id'];
                if(count($mailData)) {
                    extract($mailData);
                    // SEND THE EMAIL VIA wp_mail
                    $sendMail = wp_mail( $to, $subject, $message, $headers, $attachments );
                    // LOG SEND OR ERROR
                    if($sendMail) {
                        $wpdb->query("UPDATE mj_form_notifications SET mj_mail_sent = mj_mail_sent+1 WHERE mj_mail_id = ".intval($mailID));
                    } else {
                        if(!isset($ts_mail_errors)) $ts_mail_errors = array();
                        if(isset($phpmailer)) {
                            $ts_mail_errors[] = $phpmailer->ErrorInfo;
                            $errors[] = $phpmailer->ErrorInfo;
                        }
                        $wpdb->query("UPDATE mj_form_notifications SET mj_mail_send_errors = '".mysql_real_escape_string(serialize($ts_mail_errors))."' WHERE mj_mail_id = ".intval($mailID));
                    }
                }
            }
        }
        return (count($errors)) ? implode(', ',$errors) : true;
    } else {
        return 'No Lead ID posted';
    }
}


?>