Data Files
06/03/2024
May 2024 Nixie Volume

This spreadsheet contains the UAA statistics for May 2024.

Tech Guides
06/01/2024
Zone Charts Matrix Technical Guide (Effective - June 2024)

This guide details technical information about the National Zone Charts Matrix. A few topics in this guide include Defining a Zone, Matrix File General Information, and Matrix Zone Determination.

Release Notes
05/31/2024
Data Files
05/30/2024
Labeling List Changes Effective July 1, 2024

Effective July 1, 2024, we are revising Labeling List(s) L001, L009, L011, L012, L201, L606, and L607 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings that are inducted on or after the July 1, 2024, effective date, but no later than August 31, 2024, expiration date. The changes will be published in the Postal Bulletin, Issue #22652.


 

Presentations
05/30/2024
Publications
05/28/2024
Announcements
05/27/2024
Announcements
05/23/2024
Presentations
05/22/2024
Release Notes
05/22/2024
Announcements
05/20/2024
Announcements
05/16/2024
Post Office/ZIP Code Entries for Postal Bulletin 5/30/2024

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 5/30/2024.

Tech Guides
05/10/2024
PostalOne! Release 60.0.0.0 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 60.0.0.0

Tech Guides
05/10/2024
PostalOne! Release 60.0.0.0 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 60.0.0.0

Tech Guides
05/10/2024
PostalOne! Release 60.0.0.0 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 60.0.0.0

User Guides
05/10/2024
Certified Mail®

Certified Mail is an extra service that provides the sender with a mailing receipt, tracking history, and, upon request, electronic verification that a mail piece was delivered or that a delivery attempt was made. Certified Mail can be used with both First-Class and Priority Mail, and items sent with this extra service are dispatched and handled in transit as ordinary mail.  This guide provides an explanation of the product, the different types of Certified Mailings, and instructions for preparing Certified Mail.