04/18/2024
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.
02/16/2024
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.
02/05/2024
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.
01/18/2024
Traditional ACS™ with Shipper Paid Services Technical Guide
This document is a guide that provides technical information about Traditional ACS™ with shipper paid services.
01/18/2024
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.
04/03/2023
12/01/2022
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.
05/02/2022
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.
05/02/2022
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.
05/11/2021
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™).
08/18/2020
11/05/2019
10/18/2019
Traditional ACS™ Technical Guide
This document is a guide that provides technical information about Traditional ACS™.
10/18/2019
SingleSource ACS™ Technical Guide
This guide is a technical reference for SingleSource ACS. Includes how ACS works, participation requirements, and fulfillment files.
10/18/2019
ACS™ File Format Technical Guide
This document contains the technical guide for ACS file format.
10/18/2019
OneCode ACS® Technical Guide
This guide provides technical references for OneCode ACS®.
09/12/2019
Secure Destruction Technical Guide
A technical reference for implementing the Secure Destruction process.
07/30/2019
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.
03/15/2019
ACS™ Enrollment Form
Enrollment form for ACS™.
01/29/2019
01/29/2019
07/25/2018
Appendix C: ACS™ Product Code Information and Details
This document provides ACS™ Product Codes, descriptions, classifications, shapes, and fees.
06/25/2018
06/22/2018
06/22/2018
06/22/2018
05/17/2018
05/17/2018
05/17/2018
05/17/2018
03/22/2018
03/07/2018
03/07/2018
03/07/2018
03/07/2018
02/13/2018
01/23/2018
09/18/2017
ACS™ Product Information Guide: Publication 8
A complete overview of Address Change Services: eligibility, benefits, implementation, and technical specifications.
09/01/2017
Secure Destruction Enrollment Form
This document is an enrollment application form for Secure Destruction.
09/26/2016
Move Update Compliance for Non-U.S. Mailers FAQs
The U.S. Postal Service® has gathered some common questions asked by foreign mailers.
07/01/2016
Clarification to the Move Update Standard
This document contains information on the Move Update standards.
03/07/2016
Domestic Mail Manual (DMM®) 507.4.2: ACS™
This document provides information on Address Change Service (ACS).
08/01/2015
05/26/2015
ACS™ Electronic Product Fulfillment (EPF) Fulfillment File Access
Learn the different methods of accessing your ACS™ files from EPF.
05/05/2015
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.
04/28/2015
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.
01/16/2015
ACS™ File Format Sample File
Sample file formats for ACS™.
10/21/2014
ACS™ Electronic Product Fulfillment (EPF) Download Manager Technical Guide
Documentation for the Client Side ACS™ EPF Download Manager software package.
03/14/2014
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.
07/28/2013
Appendix D: Glossary of ACS™ Acronyms and Terminology
This document contains a glossary of ACS™ terms.
07/28/2013
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).
01/01/2013
ACS™ Announcement: Traditional ACS™ Service Type ID FAQ
This document details frequently asked questions regarding the Traditional ACS required change.
01/02/2012
Traditional ACS™ Keyline Utility
Traditional Keyline Utility - Enter a keyline, see the check digit.
05/01/2011
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.
10/14/2009
ACS™ Announcement: ACS™ Fulfillment for Wednesday October 14, 2009
ACS fulfillments for Wednesday morning October 14 will be delayed.
10/09/2009
ACS™ Announcement: ACS™ Fulfillment for Saturday, Sunday and Monday October 10 - 12, 2009
ACS customers who are expecting ACS fulfillments on Saturday, Sunday and Monday October 10 - 12, 2009 may not receive all of the records available for fulfillment.
10/07/2009
ACS™ Announcement: ACS™ Fulfillment for Wednesday October 7, 2009 & Thursday October 8, 2009
The ACS fulfillment for Wednesday October 7, 2009 and October 8, 2009 did not contain all of the records available for fulfillment.
09/29/2009
ACS™ Announcement: ACS™ Fulfillment for Saturday September 26, 2009
The ACS fulfillment for Saturday September 26, 2009 did not contain all of the records available for fulfillment.
05/08/2009
Traditional ACS™ MOD 10 Keyline Utility with Microsoft Excel®
ACS™ MOD 10 Keyline Utility utilizing Microsoft Excel®
02/16/2009
ACS™ Announcement: OneCode ACS® Fulfillment
Information regarding OneCode ACS data content regarding the Intelligent Mail (IM) barcode
12/05/2008
12/05/2008
ACS™ Announcement: Daily Fulfillment for OneCode ACS® December 5, 2008
OneCode ACS® Fulfillment will change to a daily fulfillment.
09/29/2008
ACS™ Announcement: ACS™ Fulfillment Tuesday, September 30, 2008
USPS fiscal end of year processing
08/03/2008
07/31/2008
04/18/2008
04/18/2008
04/18/2008