05/21/2023
USPS Ship Tech Sheet
USPS Ship is our next generation package platform for postage payment and adjustments. Our new, improved platform simplifies your shipping process, so you can focus on your core business.
05/01/2023
IV-MTR API Developer Toolkit
The Developer Toolkit provides information about using the Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Application Programming Interface (API). The API enables the mailing industry to integrate mobile and web-based applications with near real-time IV-MTR data through a lightweight data exchange.
04/26/2023
04/18/2023
NCOALink® User Technical Reference Guide
This document is a technical reference guide for NCOALink®.
12/09/2022
Labeling Lists Technical Guide
The Labeling Lists data product assists mailers with presorting mail. It provides active, originating 3- and 5-digit ZIP Code™ data along with their destination locations [including city/state/ZIP Code] for labeling purposes. The product contains complete data files of each list found online via Postal Explorer® at https://pe.usps.com. Updates to the Labeling Lists are also published in the Postal Bulletin.
11/09/2022
PostalOne! Release 57.0.0.0 Mail.XML PrePROD WSDLs
This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ PrePROD Release 57.0.0.0
11/09/2022
PostalOne! Release 57.0.0.0 Mail.XML TEM WSDLs
This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ TEM Release 57.0.0.0
11/09/2022
PostalOne! Release 57.0.0.0 Mail.XML CAT WSDLs
This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ CAT Release 57.0.0.0
11/09/2022
PostalOne! Release 57.0.0.0 Mail.XML PROD WSDLs
This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ PROD Release 57.0.0.0
09/07/2022
Informed Delivery API Technical Specifications v4.1.0 9-1-2022
This is the Technical Specifications guide for the Informed Delivery API - Release 4.1.0 on 9/1/2022