Informed Visibility® Mail Tracking & Reporting (IV®-MTR) User Guide

The User Guide describes the prerequisites for receiving mail tracking data through IV-MTR, the data provisioning options available, and how to use the application for tracking commercial domestic-bound barcoded letters and flats.

Parcel Labeling Guide

This document has been developed to make it easier to create and use labels on parcels shipped via the United States Postal Service® (USPS®). While some flexibility exists in design of shipping labels, using these standards will make label certification easier and make processing your parcels more efficient.

INFORMATIONAL- Scheduled Commercial Systems Activities 12.15.2024

INFORMATIONAL: Mail Anywhere Pre-Authorization Change

INFORMATIONAL: Update - PostalOne! System - Promotions

Customer Outage Questionnaire

Use this document to report an outage.  Please send to PackageFraudPrevention@usps.gov and denote the e-mail as high importance.

PostalOne! Release 61.0.0.0 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 61.0.0.0

PostalOne! Release 61.0.0.0 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 61.0.0.0

PostalOne! Release 61.0.0.0 Mail.XML PrePROD WSDLs

PostalOne! Release 61.0.0.0 Mail.XML CAT WSDLs