Effective November 2, 2026, the Postal Service™ will revise Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM®), in various sections, to delete or revise text as applicable as a result of the Postal Service retiring the manifest mailing system (MMS) on April 1, 2026.
The Postal Service will also update Quick Service Guides (QSGs) 230 and 800 to reflect these revisions.
Although these revisions will not be published in the DMM until November 2, 2026, the standards are effective immediately.
Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM)
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200 Commercial Mail Letters, Cards, Flats, and Parcels
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202 Elements on the Face of a Mailpiece
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3.0 Placement and Content of Mail Markings
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3.10 Exceptions to Markings
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[Revise the text of item b. to read as follows:]
b. USPS Ship. Mail manifested using the USPS Ship system under 705.2.0 must bear the basic marking and the additional marking “USPS Ship” in two places:
1. In the required permit imprint as described in 604.5.0.
2. In the human-readable text above the required barcode described in 204.2.0.
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207 Periodicals
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18.0 General Mail Preparation
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18.4 Mail-Preparation Terms
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[Revise the last sentence of item z. to read as follows:]
z. ***Pieces may not be combined in more than one physical bundle for each logical presort destination.
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210 Commercial Mail Priority Mail Express
213 Prices and Eligibility
1.0 Prices and Fees
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1.2 Determining Single-Piece Weight
[Delete the last sentence of the text of 1.2.]
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220 Commercial Mail Priority Mail
223 Prices and Eligibility
1.0 Prices and Fees
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1.7 Determining Single-Piece Weight
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[Delete item d. in its entirety.]
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224 Postage Payment and Documentation
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2.0 Postage Paid with Permit Imprint
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2.2 Minimum Quantity
[Revise the text of 2.2 to read as follows:]
Permit imprint mailings must contain at least 200 pieces or 50 pounds.
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240 Commercial Mail USPS Marketing Mail
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244 Postage Payment and Documentation
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5.0 Residual Pieces
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5.3 Postage Payment for Barcoded Machinable Parcels
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[Revise the title and text of 5.3.1 to read as follows:]
5.3.1 100-Percent Eligible
If 100 percent of the pieces in a mailing are eligible for the machinable parcel prices under 243.5.0, then the mailing may be paid with meter stamps, permit imprint, or precanceled postage.
[Revise the title and introductory text of 5.3.2 to read as follows:
5.3.2 Less Than 100-Percent Eligibility
If less than 100 percent of the parcels in the mailing are eligible for the machinable prices, then the following standards apply:
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[Delete item c. in its entirety.]
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245 Mail Preparation
1.0 General Information for Mail Preparation
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1.4 Preparation Definitions and Instructions
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[Revise the last sentence of item y. to read as follows:]
y. ***Regardless of the mail class, pieces may not be combined in more than one physical bundle for each logical presort destination.
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12.0 Preparing Customized MarketMail
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12.5 Required Containerizing
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[Revise the first sentence of item d. to read as follows:]
d. If more than three types of containers are used, the mailing must be prepared using a postage-payment system approved by the director, Business Acceptance Solutions. (See 608.8.0 for address).***
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250 Commercial Mail Parcel Select Parcels
253 Prices and Eligibility
1.0 Prices and Fees
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1.3 Computing Postage
1.3.1 Determining Single-Piece Weight
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[Delete item d. in its entirety.]
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260 Commercial Mail Bound Printed Matter
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265 Mail Preparation
1.0 General Information for Mail Preparation
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1.5 Preparation Definitions and Instructions
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[Revise the last sentence of item o. to read as follows:]
o. ***Pieces may not be combined in more than one physical bundle for each logical presort destination.
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280 Commercial Mail USPS Ground Advantage — Commercial
283 Prices and Eligibility
1.0 Prices and Fees
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1.5 Computing Postage
1.5.1 Determining Single-Piece Weight
[Revise the text of 1.5.1 to read as follows:]
To determine single-piece weight in any mailing of nonidentical-weight pieces, weigh each piece individually. To determine single-piece weight in a mailing of identical-weight pieces, weigh a sample group of at least 10 randomly selected pieces and divide the total sample weight by the number of pieces in the sample. Except for mailers using USPS Ship, when determining single-piece weight for USPS Ground Advantage mailpieces, express all weights in decimal pounds rounded up to 2 decimal places. Mailers using USPS Ship may round up to 4 decimals, and USPS Ship will automatically round to the appropriate decimal place.
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500 Additional Mailing Services
503 Extra Services
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4.0 Insured Mail
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4.4 Bulk Insurance for USPS Marketing Mail
4.4.1 Eligibility
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[Delete item c. in its entirety.]
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7.0 USPS Tracking
7.1 Basic Standards
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7.1.2 Electronic Option USPS Tracking for USPS Marketing Mail Parcels
[Revise the last sentence of 7.1.2 to read as follows:]
***If electronic-option USPS Tracking is not requested for all of the pieces in the mailing, or if the pieces are not identical weight, then the exact metered postage must be affixed to each piece, or postage must be paid with permit imprint under USPS Ship (705.2.0).
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509 Other Services
1.0 Address Information System Services
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[Delete sections 1.19, 1.20, and 1.21, in their entirety, and renumber current sections 1.22 through 1.34 as new 1.19 through 1.31, respectively.]
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600 Basic Standards for All Mailing Services
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604 Postage Payment Methods and Refunds
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5.0 Permit Imprint (Indicia)
5.1 General Standards
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5.1.2 Minimum Volume
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[Revise the text of item d. to read as follows:]
d. Single-piece mailings of First-Class Mail when using electronic documentation, including piece-level barcode information.
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[Revise the first sentence of item g. to read as follows:]
g. A mailing containing 50 pieces or 50 pounds of nonpresorted single-piece domestic mail parcels submitted under USPS Ship.***
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700 Special Standards
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705 Advanced Preparation and Special Postage Payment Systems
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2.0 Mailing Services
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[Revise the first sentence of item b. to read as follows:]
b. Packages: The USPS Ship program is a 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.***
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6.0 Combining Mailings of USPS Marketing Mail, Package Services, and Parcel Select Parcels
6.1 Basic Standards for Combining Parcels
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6.1.2 Postage Payment
[Revise the last sentence of the introductory text of 6.1.2 to read as follows:]
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***Types of permissible postage-payment systems are as follows:
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[Revise the text of item a. to read as follows:]
a. Mailers may document and pay postage using USPS Ship under 2.9.
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7.0 Combining Package Services and Parcel Select Parcels for Destination Entry
7.1 Combining Parcels — DSCF/DRPDC and DDU or DS&DC Entry
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7.1.2 Basic Standards
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[Delete the first sentence of item b.]
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11.0 Combining Automation Price and Nonautomation Price Flats in Bundles
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11.3 Bound Printed Matter
11.3.1 Basic Standards
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[Revise the text of item f. to read as follows:]
f. Nonautomation-price pieces qualifying for and whose mailers claim the barcode discount, and nonautomation-price pieces for each presort destination, must be sorted so that only one physical bundle for each logical presort destination includes both nonautomation-price pieces qualifying for the barcode discount (containing a ZIP+4 or delivery point barcode) and nonautomation-price pieces (containing a 5-digit barcode).
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21.0 Optional Combined Parcel Mailings
21.1 Basic Standards for Combining Parcel Select, Package Services, and USPS Marketing Mail Parcels
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21.1.2 Postage Payment
[Revise the text of 21.1.2 to read as follows:]
Mailers may document and pay postage using USPS Ship under 2.6.
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Index
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K
keyline
[Revise the “keyline” section by deleting the “manifest mailing system, 705.2.3” line.]
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M
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[Delete the “manifest mailing systems, 705.2.0” entry section in its entirety.]
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The Postal Service will incorporate these revisions into the November 2, 2026, edition of the online DMM, which is available via Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 6-25-26
