Effective April 6, 2026, the Postal Service™ will revise Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM®), section 703.2.0, to reflect the Postal Service retiring its manifest mailing system (MMS) on April 1, 2026.
The Postal Service is retiring the manifest mailing system by retiring manifest mail preparation and the hard-copy documentation. The Postal Service is migrating customers to use the following to mail letters, cards and flat-size mailpieces:
n Electronic Documentation (eDoc);
n Full-Service Automation Option;
n Seamless Acceptance Program; and
n EInduction.
Mailers of letters, cards, and flat-size mailpieces may reference Mail.dat /Mail.XML Technical Specifications via PostalPro™ at postalpro.usps.com.
Options to mail packages include USPS Ship and USPS Click-N-Ship®. Package shippers may reference the following on PostalPro:
n Publication 199, Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systems;
n Publication 205, Electronic Verification System (eVS®) Business and Technical Guide; and
n USPS Ship documentation.
As a result of retiring MMS, Publication 401, Guide to the Manifest Mailing System, will no longer be available on PostalPro after April 1, 2026.
n HQMailEntry (HQMailEntry@usps.gov).
n USPS Ship (uspsshipsupport@usps.gov or 1-877-264-9693, Opt. 2).
n USPS Click N SHIP (PostalPro or 1-800-344-7779).
n Information about electronic documentation available via PostalPro at postalpro.usps.com/mailing/edoc.
n Publication 199, Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systems, (PostalPro).
n “Guide to USPS Ship” (PostalPro).
Although these revisions will not be published in the DMM until April 6, 2026, these standards will become effective April 1, 2026.
Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM)
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700 Special Standards
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705 Advanced Preparation and Special Postage Payment Systems
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[Revise the title and text of 2.0 to read as follows:]
2.0 Mailing Services
The Postal Service offers customers the following mailing services:
a. Letters (cards) and flats:
1. Full-Service Automation Option (see 705.23).
2. Seamless Acceptance Program (see 705.22).
b. Packages: The USPS Ship program is an electronic manifest mailing system for packages that allows mailers to document and pay postage and extra-services fees by transmitting electronic files to the Postal Service without generating paper manifests, postage statements, or clearance documents. Business Acceptance Solutions, USPS Headquarters, must approve these systems. Unless authorized by Business Acceptance Solutions, mailers may not commingle USPS Ship mail with non-USPS Ship mail within the same mailing, or place USPS Ship mail and non-USPS Ship mail in or on the same mailing container. Additional information is available via PostalPro at postalpro.usps.com.
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The Postal Service will incorporate these revisions into the next edition of the online DMM, which is available via Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 3-19-26
