Purpose: this article describes what the shipping method "Unstamped letter'' is and how you can use it.
In addition to prepaid labels, we also have regular address labels or unstamped labels. This shipping option is, as the name suggests, not stamped and therefore has no value. You will have to frank these labels yourself via a franking machine or with stamps. If you do not do this, you will receive a postage card from the carrier afterwards, on which they determine the costs for the shipment. It is also possible that some carriers unfortunately cannot send this shipment. PostNL is one of the carriers which always supports this option.