To receive a postcard rate for mailing, the minimum size is 3-1/2 inches X 5 inches and at least .007 inches thick. The maximum postcard dimensions are 4-1/4 inches X 6 inches.
You can mail a card out with first class postage as large as 6 inches X 9 inches or somewhere between the postcard size and the 6 X 9, just know the postal aspect ratio is clear and strick, so check with us before you have the card designed -- or let us design it, print it and mail it for you. It will save you time, money and keep your stress to a minimum.
