As you known, there is no Sales contract for non-commercial shipment but as our Vietnam custom regulation for non-commercial import shipment, importer have present Certified accurate of agreement email between shipper and consignee to ship the cargo to Vietnam.
If there is no agreement email, consignee has to present contract between shipper and consignee which clear indicate this shipment is presents (without payment). We fulfill all information on it and sent to him to get signature but he refused to send back to us.