I forget to affix a stamp. What will happen to my mail?

If you have written your address on the back of the envelope, your mail item will be returned to you.

If you have not, the addressee will have to pay the postage before the mail item can be delivered. The addressee pays this postage in the form of one or more stamps on a yellow postage card, which he or she posts. We deliver the mail item once we receive the postage card.