PS Form 3600-PM, Postage Statement - Priority Mail - Permit Imprint is the form you need to complete when sending your mail piece via the Priority Mail Service. The document is issued by the United States Postal Service (USPS). The latest version of the form - also known as the USPS Form 3600-PM - was released on January 1, 2019. A printable PS Form 3600-PM version can be downloaded below or found on the USPS Forms website.
The PS 3600 series includes two other related forms:
Both of the abovementioned USPS Postage Statements are used with the First-Class Mail service.
The Priority Mail Service is typically used to send letters, tubes, packages and large or thick envelopes. The weight of the package should not exceed 70 lbs. The delivery time is about 1 to 3 business days. After preparing your mail piece, you should fill out one of the USPS Postage Statement forms. These are used to document the number of items you are sending and the postage price you are paying for the service.