• 03/11/2026

    Business Portal User Account Creation

    Instructions for new USPS Business Customers to generate a new account.

  • Announcements
    03/11/2026
    MyPFS Portal in MPP Coming Soon - March 2026

    Announcement of the release of the MyPFS product addition in My Product Portal. 

    Release Notes
    03/11/2026
    Tech Guides
    03/10/2026
    Announcements
    03/09/2026
    Program Requirements
    03/09/2026
    Release Notes
    03/06/2026
    Technical Specifications
    03/05/2026
    Intelligent Mail Matrix Barcode (IMmb) Technical Specifications

    Shipping labels on irregularly-shaped packages, softpacks, and polybags can easily become distorted or creased during automated parcel processing making reading the traditional, linear IMpb barcode challenging to scan.  USPS has developed the IMmb to help overcome these challenges and improve package visibility.  IMmb barcodes contain the same data as is in the IMpb barcode; however, they use a more robust, space-efficient robust barcode symbology for encodation.  The smaller barcode footprint allows two IMmb barcodes to be added within unused areas of existing standard shipping labels.  The result is redundancy of the barcode data giving sorters two additional chances to read the barcode. 

    The US Postal Service® requires  IMmb barcodes on all package shipping labels.

    Release Notes
    03/04/2026
    Release Notes
    03/04/2026
    Fact Sheets
    03/03/2026
    Ancillary Service Endorsement Fact Sheet

    Ancillary service endorsements are used by mailers to request an addressee’s new address or the reason mail cannot be
    delivered as addressed and to provide the US Postal Service with instructions on how to handle Undeliverable As Addressed
    (UAA) mailpieces.