[otrs] Notice of pending auto close to customer

Support emails are answered via OTRS and frequently the customer never emails us back to let us know if it does or does not resolve the situation, so we typically set the ticket to autoclose. Is there a way to send a notice to the customer of the pending auto close because we consider the situation resolved? If the customer emails us back then we can cancel the autoclose, keep the ticket open and continue to attempt to resolve the problem? Carl