A modification of the standard LaTeX letter class which prints multiple, pre-stamped, 5.5" by 3.5" postcards (a US standard size) via the envlab and mailing packages. An address database is employed to address the front side of each postcard and a message is printed on the back side of all. An illustrative example is provided. The author is Bil Kleb. See also formlett akletter brief dinbrief g-brief textmerg.