Send email to admin before Rent end.<br /> For that you need create GRON job and connect to Cron check so URL:<br /> 'http://{yours site}/index.php?option=com_vehiclemanager&Itemid={Yours ItemID}&task=rent_before_end_notify'   with span - every day.<br /> Cron Jobs may look like:<br /> 'wget -q -O - http://localhost/~andrew/joomla_15/index.php?option=com_vehiclemanager&Iteid=56&task=rent_before_end_notify /dev/null' 