PostalOne! Release 58.0.0.0 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 58.0.0.0

PostalOne! Release 58.0.0.0 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 58.0.0.0

PostalOne! Release 58.0.0.0 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 58.0.0.0

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

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.

API Tech Sheet

The USPS API Platform provides a dynamic, one-stop-shop of shipping capabilities to expand business reach and increase efficiency. The USPS suite of APIs focuses on key business capabilities – standardize an address, price a package, create a label, find a USPS acceptance facility, schedule a carrier pick-up for Connect Local Packages, and track a package from entry to delivery. The USPS API platform offers webhooks* for near-real-time push notifications for tracking events. The platform has a publicly facing Developer Portal that provides streamlined user experience with simple integrations with USPS systems. The USPS Developer Portal provides documentation and coding examples to enable developers to integrate with USPS APIs quicklly.

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.

Occupancy Trends Technical Guide

NCOALink® User Technical Reference Guide

This document is a technical reference guide for NCOA^Link®.

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.