Fact Sheets
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.

User Guides
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.

Publications
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.

Publications
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.

Quick Service Guides
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™).

Fact Sheets
03/07/2018
Fact Sheets
03/07/2018
Fact Sheets
03/07/2018
Fact Sheets
03/07/2018
FAQs
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.

Fact Sheets
07/01/2016
Clarification to the Move Update Standard

This document contains information on the Move Update standards.

Fact Sheets
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.

Presentations
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.