Postcard Mailing Size

Mailing postcards at My Postcard Printing

Use our fast and easy postcard mailing services. We offer low USPS (United States Postal Service) postage rates. A particular postcard mailing size is specific to a postage rate. Standard sizes (4 x 6” and 4.25 x 6) are mailed at First Class Card Rate. Postcards with sizes 4.5 x 6” to 11 x 6” are mailed with these postage rates: First Class Letter Rate and Standard Bulk Rate. We also mail tabbed prints, flat postcards, and folded postcards with envelopes. Confirm your mailing options and specifications online. Start a postcard mailing campaign with My Postcard Printing.