Labeling List Changes Effective April 1, 2022

Effective April 1, 2022, we are revising Labeling List(s) L006, L012, L201, and L606 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 April 1, 2022, effective date, but no later than May 31, 2022, expiration date. The changes will be published in the Postal Bulletin, Issue #22593.

USPS® Blue Collection Box Location Dataset Internal Control Document

The dataset contains the United States Postal Service^® collection box locations and includes times when the mail is collected from these boxes.

USPS® Post Office Location Dataset Internal Control Document

The dataset contains the United States Postal Service^® Post Office locations including the services provided and hours of operations. It also includes the Contract Post Office locations where USPS^® products and service can be found.

Mail.XML Technical Specifications R54.0.0.0 V3

This document contains information pertaining to Mail.XML and the USPS PostalOne! Release 54.0.0.0 taking place in January 2022.

Mail.dat Technical Specifications R54.0.0.0 V3

Labeling List Changes (December 2021)

Effective January 1, 2022, we are revising Labeling List(s) L009, L011, L012, L014, L015, L051, L201, L601, and L605 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 January 1, 2022, effective date, but no later than February 28, 2022, expiration date. The changes will be published in the Postal Bulletin, Issue #22587.

 

Mail.XML Technical Specifications R53.0.0.0 (Version 2)

This document contains information pertaining to Mail.XML and the USPS PostalOne! Release 53.0.0.0 taking place in August 2021.

Mail.dat Technical Specifications R53.0.0.0 (Version 3)

This document contains information pertaining to Mail.DAT and the USPS PostalOne! Release 53.0.0.0 taking place in August 2021.

Proposed Sample Zone Charts

Mail.dat Technical Specifications R52.1 (Version 1)

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