User Guides
10/26/2021
How to Submit Mail.XML Jobs to PostalOne!®

This guide provides step‐by‐step instructions for submitting electronic mailing information into the USPS® for Full‐Service letters & flats.

User Guides
10/26/2021
How to Submit Mail.dat Jobs to PostalOne!®

This document is a comprehensive guide that outlines steps for exchanging electronic data with the PostalOne!® system using the Mail.dat file format.

User Guides
08/06/2021
User Guides
08/06/2021
User Guides
08/06/2021
User Guides
08/06/2021
User Guides
06/18/2021
MTEOR Order Manual

The Mail Transport Equipment Ordering System (MTEOR) is a fast, reliable, and convenient place to order mail transport equipment (MTE) online. This manual instructs you on a MTESC orders and requests from a plant.

User Guides
06/18/2021
MTEOR Mailer Request Manual

MTEOR (Mail Transport Equipment Ordering system) for Local Mailers allows select Mailers to manage MTE requests from a Postal plant online through MTEOR. This document outlines the benefits fo this online application including easily requesting MTE online, real-time insight into the status of requests, and around the clock access.

User Guides
04/26/2021
Mailing and Shipping Solutions Center (MSSC) Topics

List of topics the MSSC can assist with. To reach the MSSC, email us at MSSC@usps.gov or call 1-877-672-0007 from 7:00AM – 7:00PM CT.

User Guides
03/03/2021
Express Mail Corporate Account (EMCA) Migration to National Customer Management System (NCMS)

The USPS Centralized Accounting Processing System (CAPS) is one of the USPS payment processing systems customers can use to fund their Express Mail Corporate Account (EMCA). The CAPS system will retire in the summer of 2021. Current Priority Mail Express (PME) customers who are using CAPS to fund their EMCA need to start using the USPS National Customer Management System (NCMS) to fund their EMCA. Customers can use Credit Card or Automated Clearing House (ACH)-debit/credit for establishing payment method in NCMS. This document provides the steps EMCA customers need to complete in-order to use the NCMS to fund their EMCA and to delink the their EMCA from CAPS.