Intelligent Mail® Barcode (IMb) 4-State Specification

This document provides the specifications for generating and printing the Intelligent Mail® barcode (IMb) used in the U.S. Postal Service (USPS) mailstream. The IMb is also known as the USPS OneCode Solution or USPS 4-State Customer Barcode (abbreviated 4CB, 4-CB, or USPS4CB). This document provides information for software developers and users alike on the creation and printing of compliant IMb. It describes the symbology, format, fields, values and other characteristics of the Postal Service IMb.

Customs Form Certification Checklist

Form to download, complete, and send to NCSC as part of the certification process.

Customs Form Certification Checklist

This document contains a checklist for the Customs Form Certification.

USPS® Delivery Standards and Statistics Fact Sheet

International Service Center (ISC) Zone Chart Technical Guide

This document contains information about the technical guide for ISC Zone Chart.

Periodicals Critical Entry Times (CET) Memo

This message describes changes to the standardized National Destination Critical Entry Times (CET) for periodical mailing customers.

Test Procedures for Automatable Polywrap Film

This document provides updated information for USPS-T-3204 - Test Procedures for Automatable Polywrap Film sections referenced in the Domestic Mail Manual (DMM) for the U.S. Postal Service (USPS). Requirements identified in the DMM 201.4.5.  Polywrap Specifications refer to specific sections for test methods in USPS-T-3204 – Test Procedures for Automatable Polywrap Film.

Intelligent Mail® Package Barcode (IMpb) Options for Federal Agencies

As of January 25, 2015, the Intelligent Mail® Package Barcode (IMpb) is required for Certified Mail®, Registered Mail®, Priority Mail® and all packages.

Postal Customer Council (PCC) Workshop: Extra Services

This presentation provides an overview on an Extra Sevices.

ACS™ File Format Sample File

Sample file formats for ACS™.