text: what do you mean by the term pre alert? it is related to the field of logistics pre-alert is a means of notifying importer about his goods arriving. say, you are importer in us and expect shipment to arrive for you from indonesia. you ask your shipping company/customs broker/ import clearance broker to give you a pre-alert on arriving shipments. they'll usually notify you thrre-four days before the shipment arrives, so that you are able to prepare all customs documents for customs clearance.  hope this helps. good luck.