Effective November 2, 2026, the Postal Service™ will revise Mailing Standards of the United States Postal Service, Domestic Mail Manual (DMM®), sections 204.3.2.4, 245.7.5 and 602.11.2, to update text related to Postal Service requirements for labeling and traying Plus One cards and host pieces.
Although these revisions will not be published in the DMM until November 2, 2026, these standards are effective immediately.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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204 Barcode Standards
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3.0 Standards for Barcoded Tray Labels, Sack Labels, and Container Labels
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3.2 Specifications for Barcoded Tray and Sack Labels
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3.2.4 3-Digit Content Identifier Numbers
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Exhibit 3.2.4 3-Digit Content Identifier Numbers
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USPS MARKETING MAIL
ECR Letters — Barcoded
[Revise the first two items listed, beginning with “Saturation” and “high density,” respectively, to read as follows:]
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MKT Letters — Automation
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[Revise the item beginning with “SCF” to read as follows:]
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Enhanced Carrier Route Flats — Nonautomation
[Revise the first item listed, beginning, with “Saturation,” to read as follows:]
[Revise the second item listed, beginning with “high density,” to read as follows:]
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240 USPS Marketing Mail
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245 Mail Preparation
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7.0 Preparing Automation Letters
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7.5 Tray Preparation
[Add a sentence before the last sentence of the introductory text to read as follows:]
***Plus One cards are exempt from tray minimums.***
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600 Basic Standards for All Mailing Services
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602 Addressing
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11.0 Commercial Plus One Mailpieces
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11.2 Mail Preparation
[Revise the text of 11.2 to read as follows:]
Plus One host piece mailings must be trayed and labeled according to 245.6.7 or 245.9.7. Plus One cards must be trayed and labeled according to 245.7.0. Palletized mailings must be prepared according to 705.8.10.3.
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The Postal Service will incorporate these revisions into the next update of the online DMM, which is available on Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 7-23-26
