Tech Guides
05/25/2023
PostalOne! Release 58.0.0.0 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 58.0.0.0

Tech Guides
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.

Tech Guides
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.

Tech Guides
04/26/2023
Tech Guides
04/18/2023
NCOALink® User Technical Reference Guide

This document is a technical reference guide for NCOALink®.

Tech Guides
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.

Tech Guides
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

Tech Guides
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

Tech Guides
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

Tech Guides
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