Title 39 › Part PART IV— - MAIL MATTER › Chapter CHAPTER 36— - POSTAL RATES, CLASSES, AND SERVICES › Subchapter SUBCHAPTER I— - PROVISIONS RELATING TO MARKET-DOMINANT PRODUCTS › § 3621
Covers ten kinds of mail: first-class letters and sealed parcels, first-class cards, magazines and newspapers (periodicals), standard mail, single-piece parcel post, media mail, bound printed matter, library mail, special services, and single-piece international mail. Each of these names uses the definitions given in the mail classification schedule.
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Postal Service — Source: USLM XML via OLRC
Legislative History
Reference
Citation
39 U.S.C. § 3621
Title 39 — Postal Service
Last Updated
Apr 6, 2026
Release point: 119-73