Postal indicia, which are also called postal permit imprints, are imprinted designations on mail that denotes postage pre-payment. Postal indicia are printed in the upper right corners of mail pieces in place of postage stamps. Postal indicia indicate whether the mailing is first class or standard as well as showing the post office of origin and the account permit number.
Using postal indicia gives your marketing pieces a professional look and saves time in applying postage to each marketing piece. You may save money if you qualify for bulk mailing rates. Our print partners can print your postcards with your postal indicia, however, since the mail pieces bearing postal indicia can only be mailed at the Post Office where the permit was issued, our print partners cannot mail the pieces for you.
For best results, your postal indicia should be a 150dpi image at least 200 pixels wide by 100 pixels high, with a width-to-height ratio of 2:1. The image can be any file type that is supported by the Marketing Center. To make sure your indicia image will work properly for all mailable design templates, we may need to add white space to the top and/or left side of the image after you crop it.
For more information about postal indicia visit the USPS site.