Definition of double postcard

direct-mail promotion consisting of a form folded in half and usually sealed at one edge. One half of the form is a promotion addressed to the recipient and the other half is an order form or reply form addressed to the sender. The recipient tears off the order form to mail back to the sender. Double postcards must be printed on paper stock that meets U.S. Postal Service requirements for postcards. Different methods are used to seal the double postcard including spot glue, stickers, and tear strips. The reply form is usually postage paid and includes the prospect's preprinted name and address. Double postcards are a relatively inexpensive format for direct mail promotions but obviously limit the amount of sales copy and supportive materials that can be sent.