United States Postal Service
Site Index A-Z
Site Index by Topic
Document Locator
Contact Us

Intelligent Mail Package Barcode
This page contains information about the Intelligent Mail package barcode (IMpb) the Postal Service is proposing for package products and Confirmation Services. The IMpb will provide piece-level data to enable the Postal Service to increase efficiency, add value to its package product line, and enhance its package tracking capabilities.

Intelligent Mail Package Barcode Specification
This document provides specification for generating and printing the USPS Intelligent Mail package barcode (IMpb). Additionally, this specification governs the production of "Extra Services" barcodes.


Contact Information:

  • Intelligent Mail Package Barcode
  • Email: IMpb@usps.gov
  • Page updated: 03/31/2014
Important Updates

Standard Mail DSCF Load Leveling Final Rule Published in the Federal Register

The Postal Service has released its Federal Register final rule revising the service standards for Standard Mail that is eligible for Destination Sectional Center Facility (DSCF) rates. These changes will allow a more balanced distribution of DSCF Standard Mail across delivery days. With its new rules, USPS is extending delivery expectation to four days for mail entered on Friday and Saturday. National Implementation began April 10, 2014.

January 2014 Price Change Fact Sheets

Getting Started with Full-Service Intelligent Mail

PostalOne! Contingency Plan

For mailers unable to submit electronic information, click here for the PostalOne! Contingency Plan.


Contact Us        Version 2.02 Release Notes     Privacy Policy