/**
  * @param Varien_Object $row
  * @return string
  */
 private function getEmail(Varien_Object $row)
 {
     $users = $this->getDiamanteUsers();
     foreach ($users as $user) {
         if ($user->id == $this->extractReporterId($row->getReporter())) {
             return $user->email;
         }
     }
     return '';
 }