PS Form 3500 Application For Periodicals Mailing Privileges

PS Form 3500 presentation for completing and submitting the application to the PCSC.

PTR2 Release Notes_DD_07_16_26

Known Issues List 7.17.2026

NCOALink® Software Developer License Agreement v29 (7/15/2026)

This agreement licenses the development of software interfaces for the NCOA^Link® product.

NCOALink® End User License Agreement v30 (7/15/2026)

This agreement licenses the use of the NCOA^Link® product to an "End User Licensee".

NCOALink® Software Interface Distributor License Agreement v30 (7/15/2026)

The software agreement for NCOA^Link® governs the distribution of licensee's certified NCOA^Link® software interface.

NCOALink® Limited Service Provider License Agreement v30 (7/15/2026)

This agreement licenses the use of the NCOA^Link® product to a "Limited Service Licensee".

Modifications to NCOALink® Licenses

This document provides information on modifications to NCOA^Link® licenses.

NCOALink® Full Service Provider License Agreement v36 (7/15/2026)

This agreement licenses the use of the NCOA^Link® product to a "Full Service Licensee".

LACSLink® End User License Agreement

This document contains the End User License Agreement for LACS^Link®.

Licensing Fees

This document contains information about licensing fees for USPS^® Licensed Products.

Address Matching System API (AMS API) Licensing Fees

This document outlines the AMS API prorated fee structure. License fees are prorated for the initial license year with a license year beginning October 1 and ending September 30.

July 17, 2026 Customer Onboarding Portal R2.5.4.0

USPS APIs Release Notes

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

CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)

RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.

CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)