March 22 2026 Release Notes

INFORMATIONAL - USPS Webinar AI, Direct Mail and Mailing Promotions available on PostalPro

How to Cancel an Existing PFSC Request

Creating PFSC Requests

PFSC Event-Shipment Status Types

Troubleshooting PFSC Delivery Issues

Troubleshooting PFSC Annual Enrollment Fee Issues

Paying Your PFSC Annual Enrollment Fee

Troubleshooting Address Validation Errors for PFSC

How to Onboard with PFSC

Producing PFSC Reports

Premium Forwarding Service Commercial Fees

Master and Partner MID Use in PFSC

Introduction to Premium Forwarding Service Commercial (PFSC)

AI and Direct Mail - USPS Webinar

If you're exploring how A.I. can strengthen direct mail performance - improve targeting, connect mail to digital channels and support smarter campaign planning - this session is worth a watch.

We also cover how USPS Mailing Promotions can support these strategies.

To view the Webinar please click here.

Passcode: 6l0UK4#5

INFORMATIONAL - Scheduled Commercial Systems Activities 3-29-2026

PFSC Application 2.0 Release Notes 3-12-2026

This document describes the updates and enhancements for the PFSC application released on 3/12/2026 along with information on the new MyPFS feature released on 3/13/2026 as part of the My Products Portal.

MyPFS Overview User Guide March 2026

This is a guide describing the new MyPFS product feature in the My Product Portal released in March 2026.

Tracking Access Control Tech Sheet

Package Tracking allows seamless integration of real-time tracking information into business systems, enabling monitoring of USPS package status from shipment to delivery.  USPS is upgrading tracking data access to enhance security and combat fraud by modernizing and securing customer access.

Premium Forwarding Service Commercial External User Guide

User Guide for the Premium Forwarding Service Commercial application. 

CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)

RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.

CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: M L O C R Mailers/Users Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: M L O C R Service Bureaus Data File Cycle O - (Expires July 31, 2028)