Manifest Mailing System Exception Request Form

Effective April 1, 2026 - The Postal Service is retiring Publication 401 Manifest Mailing System (MMS) used for mail sortation and preparation with hard copy forms and documentation. Affected customers must migrate to Electronic Documentation (eDoc), Full Service, Seamless, and eInduction, for Letters, Cards, and Flats April 1st,, 2026.

Mailers who require a onetime exception to continue using the Manifest Mailing System—due to an inability to meet the deadline to migrate to Full Service, Seamless, or USPS Ship, may do so by submitting their request to their local Manager Business Mail Entry.

INFORMATIONAL - Upcoming Maintenance Change Request - CHG1235463

INFORMATIONAL - USPS Ship Data Feed Update - New Notifications for Duplicate & Unmanifested Packages

March 8 2026 Release Notes

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.

DELIVERY - Military Post Offices Temporarily Suspended Updated

DELIVERY - International Service Suspension Notice

Brewed for Business: The Shipping Mini Café

INFORMATIONAL - New Premium Forwarding Service Commercial - Coming Soon

INFORMATIONAL - PME Embargo Due To Chemical Spill Memphis, TN FedEx Hub

PCC Events (March 2026)

February 2026 Nixie Volume

This spreadsheet contains the UAA statistics for February 2026.

INFORMATIONAL - Federal Register - Manifest Mailing System Retiring

INFORMATIONAL - NCOA API Launching July 2026

PTR2 Release Notes_DD_02_28_26

USPS Ship Data Dictionary

Detailed information on the USPS Ship (Formerly Package Platform) data elements available through the Informed Visibility Mail Tracking & Reporting (IV-MTR) application. Please note that items in bold text were updated or added recently.

March 1 2026 Release Notes

INFORMATIONAL - PME Guarantee Suspension and Shipping Delays

INFORMATIONAL: Mail Spoken Here - February Issue

INFORMATIONAL - USPS Addressing API Major Enhancements Coming July 2026

INFORMATIONAL - USPS Ship (Package Platform) - INCIDENT 10424647 USPS Ship January and February Manifest Processing Delay

INFORMATIONAL - USPS APIs System Maintenance March 11, 2026

PCC Insider February 2026 Edition

Undeliverable-as-Addressed (UAA) Mail Roll-Up 1998-2025

Professional Development Series - Poor Communications Can Destroy Your Career with Floyd Creecy

https://usps.zoomgov.com/rec/share/Iy9r8HUNE1RGjLvrgP5ehz2mMhlBGAfMzJtFq-8T3iG91vJhJQ6eepxP2oYqYloV.dtudJneQRochTjt9

Passcode: 3FBJm1!Z