function sendMessage($event, $parameters)
 {
     $collections = eZNotificationCollection::fetchListForHandler(self::NOTIFICATION_HANDLER_ID, $event->attribute('id'), self::TRANSPORT);
     foreach ($collections as $collection) {
         $items = $collection->attribute('items_to_send');
         $addressList = array();
         foreach ($items as $item) {
             $addressList[] = $item->attribute('address');
             $item->remove();
         }
         $transport = eZNotificationTransport::instance('ezmail');
         $transport->send($addressList, $collection->attribute('data_subject'), $collection->attribute('data_text'), null, $parameters);
         if ($collection->attribute('item_count') == 0) {
             $collection->remove();
         }
     }
 }