Tech Guides
06/18/2025
PostalOne! Release 62.0.0.0 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 62.0.0.0

Tech Guides
06/18/2025
PostalOne! Release 62.0.0.0 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 62.0.0.0

Tech Guides
06/18/2025
PostalOne! Release 62.0.0.0 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 62.0.0.0

Tech Guides
06/13/2025
Informed Delivery Mail.XML Mailer Guide

This is a guide for submitting campaigns to PostalOne! via Mail.XML electronic documentation (eDoc).

Tech Guides
06/13/2025
Informed Delivery Mail.dat Mailer Guide

This is a mailer guide for creating campaigns via PostalOne! through Mail.dat eDoc submission.

Tech Guides
05/06/2025
eVS to USPS Ship Migration Tech Sheet

The Postal Service is retiring the electronic verification system (eVS). eVS customers must migrate to USPS Ship or USPS APIs by February 2025. This includes customers using Premium Forwarding Services Commercial (PFSC) and Click N Ship BusinessPro (CNBPro). This document outlines the differences between the two platforms and steps to migrate from eVS to USPS Ship.

Tech Guides
05/06/2025
Tech Guides
05/06/2025
Tech Guides
03/07/2025
Secure Destruction Technical Guide

A technical reference for implementing the Secure Destruction process