Title 39 — Postal ServiceRelease 119-73
§3631 Applicability; definitions and updates
Title 39 › Part PART IV— - MAIL MATTER › Chapter CHAPTER 36— - POSTAL RATES, CLASSES, AND SERVICES › Subchapter SUBCHAPTER II— - PROVISIONS RELATING TO COMPETITIVE PRODUCTS › § 3631
Summary
Applies to five mail products: priority, expedited, bulk parcel post, bulk international, and mailgrams. "Costs attributable" means direct and indirect postal costs reliably linked to a product; meanings follow mail classification schedule.
Full Legal Text
Title 39, §3631
Postal Service — Source: USLM XML via OLRC
(a)This subchapter shall apply with respect to—
(1)priority mail;
(2)expedited mail;
(3)bulk parcel post;
(4)bulk international mail; and
(5)mailgrams;
(b)For purposes of this subchapter, the term “costs attributable”, as used with respect to a product, means the direct and indirect postal costs attributable to such product through reliably identified causal relationships.
(c)Mail matter referred to in subsection (a) shall, for purposes of this subchapter, be considered to have the meaning given to such mail matter under the mail classification schedule.
Reference
Citations & Metadata
Citation
39 U.S.C. § 3631
Title 39 — Postal Service
Last Updated
Apr 6, 2026
Release point: 119-73