/**
  * Ajax call for trigger send action manually
  * 
  * @since  1.1.0
  * 
  * @return [type] [description]
  */
 public function force_run()
 {
     check_ajax_referer('ajax_nonce', 'nonce');
     $subscriber = STC_Subscribe::get_instance();
     $subscriber->stc_send_email();
     _e('Scheduled event successfully executed', STC_TEXTDOMAIN);
     die;
 }