https://postalpro.usps.com/2626/rss.xmlManifest Mailing System Postsen https://postalpro.usps.com/node/3481 The Parcel Data Exchange (PDX) is accessed via the web and Application Programming Interface (API) to allow customers to send manifest files and receive outbound files from the United States Postal Service® (USPS®). This document provides the information necessary to begin using the web-based portion of the PDX application using a web browser. Mon, 28 Aug 2023 00:00:00 -0400 https://postalpro.usps.com/pub_401 This publication provides information on the Manifest Mailing System, which automates the documentation of postage and fees for all pieces in a mailing paid via permit imprint indicia. Mon, 22 Jan 2024 00:00:00 -0500 https://postalpro.usps.com/node/182 Before completing the Manifest Mailing System Application, review Publication 401: Guide to the Manifest Mailing System. Tue, 07 Feb 2017 00:00:00 -0500