getNumberOfActiveMailCollectors() static public method

 /**
  * Get footer to add to content
  **/
 function getContentFooter()
 {
     if (MailCollector::getNumberOfActiveMailCollectors()) {
         return self::FOOTERTAG . ' ' . __('To answer by email, write under this line') . ' ' . self::FOOTERTAG;
     }
     return '';
 }