Stamped envelope

This article is about a postal stationery product. For written correspondence products, see Stationery. For monogrammed or personal letterhead, see Letterhead.
A 2 centavos stamped envelope with embossed Columbus indicium and 3c adhesive postage stamp from Cuba to Norway ca. 1904

A stamped envelope or postal stationery envelope (PSE) is an envelope with a printed or embossed indicium indicating the prepayment of postage. It is a form of postal stationery.