“Postpaid” (as opposed to Prepaid) was mistaken for “portofrit” (free shipment) in Danish. The correct translation would be “efterbetalt”, quite different.
Free shipment is “Postage paid” in English.
“Postpaid” vs “Post Paid”
Actually, “postpaid” is generally referred to as “efterkrav” in Danish, which literally translates into “post demand”