DELIVERY: WestPac Area: CO-WY District - Beulah Post Office (81023) - Resume Operations

INFORMATIONAL: WestPac Area AIM Meeting - August 6, 2026

DELIVERY - INTERNATIONAL SERVICE SUSPENSION NOTICE – effective July 17, 2026

INFORMATIONAL - Security Enhancements to USPS.com July 30, 2026

INFORMATIONAL - UPDATE - PostalOne! System (PO!) – Delivery Sort Container Discount Not Applied

Addresses API - Tech Sheet

Known Issues List 7.15.2026

USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Release Notes

These release notes summarize new features and enhancements implemented in deployments to the IV-MTR application.

Business Acceptance Solutions & Major Mailer Support Directory

This document provides a contact list for Business Acceptance Solutions (formerly Business Mailer Support) & Major Mailer Support

MPE (Mail Processing Equipment) Service Provider Licensees

Marketing contact information for certified Mail Processing Equipment (MPE) licensees 

PCC Voice Challenge #BestMailbox Contest!

INFORMATIONAL - FAST Appointments Pilot for Packages Entered or Accepted at S&DCs

INFORMATIONAL - REMINDER - POSTPONED – Addresses API 3.2.3 Access Postponed Until August 1, 2026

Catalog Incentive Fact Sheet

Catalogs offer a unique marketing perspective to products and services and provide important value to the mailbox. As part of the July 14, 2024 price change, USPS published a new Catalog definition in the Domestic Mail Manual. Simultaneously, the Postal Service is offering a Catalog Incentive price discount of $0.001 per mailpiece to Catalog mailers who comply with the new Catalog definition and meet all other eligibility requirements for the Catalog Incentive.

Catalog Incentive FAQ's

Marriage Mail Incentive FAQs

Marriage Mail is a form of direct mail in which marketing service companies combine or “marry” advertisements (e.g., coupons or sales notices) from multiple companies into one mail piece to reduce the cost of the mailing for individual advertisers. This type of direct mailing product allows businesses to reach targeted customer segments.

INFORMATIONAL - Updated PostalOne! System (PO!) – Delivery Sort Container Discount not applied

USPS APIs Access Control Data Dictionary

Detailed information on the USPS APIs data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application for API Access Control.

INFORMATIONAL - PostalOne! System (PO!) – Delivery Sort Container Discount not applied

Marriage Mail Incentive Fact Sheet

Marriage Mail is a form of direct mail in which marketing service companies combine or “marry” advertisements (e.g., coupons or sales notices) from multiple companies into one mail piece to reduce the cost of the mailing for individual advertisers. The Marriage Mail Incentive is a discounted (incentive) price offered on Saturation (including EDDM-Commercial) and High Density Plus Marketing Mail letters and flats which meet certain requirements including weight and advertiser content. It has been developed in response to market needs and will benefit the mailing industry, small businesses, consumers and the USPS. As of July 12, 2026, the Incentive price will be a 20% discount on qualifying pieces.

***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)

99% Mailer Move Update Process Order Form

This form is required to be completed for the 99% accurate certification testing process.

USPS Ship Data Dictionary

Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application. Please note that items in bold text were updated or added recently.

City/State ZIP Code Weekly Compare

3 Digit ZIP/AISU Office List (AISUREPT.TXT)

Cumulative Listing of ZIP Codes Covered by the LACS Database

This document provides a cumulative listing of ZIP Codes covered by the LACS database for LACS^Link®.

AIS Congressional District File (CONG_DIST.TXT)

AIS County Name Table Layout (AISCNTY.TXT)

AMS County Name Table (COUNTY_NAME_TABLE.TXT)

AMS Address Report: AISU Mailing List (ADDRREPT.TXT)

AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)

AISU ZIP Code File (AISUZIPS.TXT)

AISU Contact Information (AISUADDR.TXT)

Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)

Area District Finance File (AREADIST.TXT)

Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)

Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Secure Destruction Plant ZIP Look Up Table

This document provides a ZIP Code lookup table for Secure Destruction plants.

AIS Copyright/License Agreement

Delivery Unit Summary Form

The Delivery Unit Summary form must be completed in its entirety in order to request DMM^® 507.8 Service.

Zone Charts Order Form

This order form is used to subscribe to the National Zone Charts Matrix & Labeling Lists Products.

Labeling Lists Order Form

This document contains the order form for Labeling Lists.

Address Information System (AIS) Products Pricing

Pricing guide for Address Information System (AIS) products, including Carrier Route, ZIP + 4^®, Five-Digit ZIP^®, City State, Delivery Statistics, Z4Change, ZIPMove, eLOT^®, and RDI™.

Address Information System (AIS) Viewer Order Form (PS Form 5111)

Product order form for Adress Information System (AIS) Viewer. Products available for purchase are the City/State Delivery Type Retrieval, County Name Retrieval, Delivery Statistics Retrieval, and ZIP + 4 Retrieval.

Address Information Systems (AIS) Products Order Form

Order form for Address Information System (AIS) products.

Address Element Correction (AEC) and AEC II Processing Request Form for Vendors

Vendor processing request form for AEC and AEC II.

Address Element Correction (AEC) & AEC II Processing Request Form

Processing form for AEC and AEC II products.

INFORMATIONAL: Guidance for Files with ADC/AADC Container and Rate Categories Entered after July 12

INFORMATIONAL - REMINDER - Commercial System Releases – Week of July 11, 2026