ACS™ Enrollment Form

This document is the enrollment form for ACS™.

Secure Destruction Technical Guide

A technical reference for implementing the Secure Destruction process

ACS™ Electronic Product Fulfillment (EPF) Fulfillment File Access

Learn the different methods of accessing your ACS™ files from EPF.

Appendix C: ACS™ Product Code Information and Details

This document provides ACS™ Product Codes, descriptions, classifications, shapes, and fees.

ACS™ Electronic Product Fulfillment (EPF) Download Manager Technical Guide

Documentation for the Client Side ACS™ EPF Download Manager software package.

Service Type Identifier (STID) Table Effective January 21, 2024

The STID (Service Type Identifier) is a three-digit numeric code used within the Intelligent Mail® barcode (IMb™) on a mailpiece that identifies the address correction or other electronic services desired.

Appendix A: Ancillary Service Type Identifier (STID) Details

Appendix A provides a detailed description of the various address correction options available within basic / Nonautomation and full-service mailings and the STIDs that provide the different undeliverable-as-addressed (UAA) treatments.

Intelligent Mail® Package Barcode (IMpb) ACS™ Technical Guide

Technical guide for users of Intelligent Mail® Package Barcode (IMpb) Address Change Services (ACS). Includes a solution overview, features, participation requirements, and service endorsement options.

Guide to Move Update

The Move Update standard is a means of reducing the number of mailpieces in a mailing that require forwarding or return by the periodic matching of a mailer’s address records with change-of-address orders received and maintained by the Postal Service.

Traditional ACS™ with Shipper Paid Services Technical Guide

This document is a guide that provides technical information about Traditional ACS™ with shipper paid services.

Elimination of Full-Service Manual Address Correction STIDs Communication

Electronic Product Fulfillment (EPF) Web Access Request Form (PS 5116)

This form is used to create a Web-based account with the Addressing and Geospatial Technology (AGT) office which will be utilized to retrieve/download files from the Electronic Product Fulfillment (EPF) website.

Mailer's Technical Advisory Committee - Best Practices for ACS™

This document is designed to enhance mailers' understanding of the US Postal Service's ACS™ product.

Mailer's Technical Advisory Committee - Best Practices for ACS™

This document is designed to enhance mailers' understanding of the US Postal Service's ACS™ product.

Service Type Identifier (STID) Quick Service Guide

This document provides quick information about the STID (Service Type Identifier) - a three-digit numeric code used within the Intelligent Mail® barcode (IMb™).

Address Change Service (ACS) with Green & Secure Fact Sheet

Appendix E: ACS™ File Format Change History

ACS™ File Format Technical Guide

This document contains the technical guide for ACS file format.

OneCode ACS® Technical Guide

This guide provides technical references for OneCode ACS®.

Traditional ACS™ Technical Guide

This document is a guide that provides technical information about Traditional ACS™.

SingleSource ACS™ Technical Guide

This guide is a technical reference for SingleSource ACS. Includes how ACS works, participation requirements, and fulfillment files.

ACS™ Electronic Product Fulfillment (EPF) Download Manager Software (Client Side)

Please send an email to ACS@usps.gov requesting the current versions of the EPF download managers and documentation to create your own download manager.

Enterprise Payment System (EPS) Sign Up Instructions

Enterprise Payment System (EPS) Sign Up Instructions

Full-Service ACS Nixie Sample Data – XML Format

Full-Service ACS COA Sample Data – XML Format

Full-Service ACS COA Sample Data – CSV Format

Full-Service ACS Nixie Sample Data – Excel Format

Choosing the Best Move Update Method for Your Mail

ACS™ Announcement: ACS SingleSource Full Service Chargeback Process

UAA Mail Label - PARS COA Label

UAA Mail Label - CFS/RFS COA Label

UAA Mail Label - CFS/RFS Nixie Label

UAA Mail Label - PARS NIXIE Label

Full-Service ACS COA Sample Data – Excel Format

ACS™ Product Information Guide: Publication 8

A complete overview of Address Change Services: eligibility, benefits, implementation, and technical specifications.

Secure Destruction Enrollment Form

This document is an enrollment application form for Secure Destruction.

Move Update Compliance for Non-U.S. Mailers FAQs

The U.S. Postal Service® has gathered some common questions asked by foreign mailers.

Clarification to the Move Update Standard

This document contains information on the Move Update standards.

Move Update at a Glance

Mailers who claim presorted or automation prices for First-Class Mail® or Standard Mail® must comply with the Move Update requirements using one of the approved address hygiene methods.

ACS™ Announcement: Electronic Product Fulfillment (EPF) Invoice Modification

The ACS EPF Billing Invoice PDF version has been modified effective with the April 24, 2015 invoice.

ACS™ File Format Sample File

Sample file formats for ACS™.

ACS™ Announcement: Electronic Product Fulfillment (EPF) Planned Maintenance and Migration Rescheduled

Electronic Product Fulfillment (EPF) maintenance previously planned for March 15, 2014 has been tentatively rescheduled to begin March 22, 2014 at 10am CST and end March 23, 2014 at 10pm CST.

Appendix D: Glossary of ACS™ Acronyms and Terminology

This document contains a glossary of ACS™ terms.

Appendix B: ACS™ Frequently Asked Questions

This document provides frequently asked questions (FAQs) and answers about the Intelligent Mail® Barcode, Traditional ACS™, OneCode ACS™, Full Service ACS™, Single Source ACS™, and the Intelligent Mail® Package Barcode (IMpb).

ACS™ Announcement: Traditional ACS™ Service Type ID FAQ

This document details frequently asked questions regarding the Traditional ACS required change.

Traditional ACS™ Keyline Utility

Traditional Keyline Utility - Enter a keyline, see the check digit.

How to Work with Your Mail Preparer to Implement IMb Services

The agenda for this presentation includes your mailing practices, IMb™ Services overview, company decisions, your mail preparer, and the project plan.

Traditional ACS™ MOD 10 Keyline Utility with Microsoft Excel®

ACS™ MOD 10 Keyline Utility utilizing Microsoft Excel®

ACS™ Announcement: OneCode ACS® Fulfillment

Information regarding OneCode ACS data content regarding the Intelligent Mail (IM) barcode