CASS™ Technical Guide for Cycle N

This document provides a technical guide for the CASS™ product. The CASS™ certification process is designed in cooperation with the mailing industry to improve the accuracy of addresses for mail qualifying for postal discounts.

Program Registration R19.1.0.0 Release Notes Change 1.0

PostalOne! R47.0.2.0 Pre-Release Notes Change 2.0

Mail.dat Technical Specifications R47.1.0.0 (Version 2)

Version 2 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

Mail.XML Technical Specifications R47.1.0.0 (Version 2)

Version 2 of the comprehensive technical guide that outlines steps for exchanging electronic data with the PostalOne! System.

eVS Automated Refund Request for Unused Labels Frequently Asked Questions (FAQ)

eVS Automated Refund Request for Unused Label Fact Sheet

PostalOne! R47.0.2.0 Pre-Release Notes Change 1.0

USPS Printer Directory Terms of Service

Please read these terms of service carefully in order to be included as a participant in this program. After USPS® has approved your application, you must sign in to your Business Customer Gateway account and electronically sign the below Terms of Service agreement.

USPS Printer Directory Application User Guide

Please use the step by step guide for further instruction on how to successfully navigate to the Printer Directory application through the Business Customer Gateway.