Title 39, Postal ServiceRelease 119-110

§3631 Applicability; Definitions and Updates

Title 39 › PART IV — MAIL MATTER › CHAPTER 36 — POSTAL RATES, CLASSES, AND SERVICES › SUBCHAPTER II — PROVISIONS RELATING TO COMPETITIVE PRODUCTS › § 3631

Last updated Sep 22, 2026|Official source

Summary

Applies to five mail products—priority, expedited, bulk parcel post, bulk international, and mailgrams—unless subsection (d) or the Postal Regulatory Commission (under section 3642) changes that. "Costs attributable" means the direct and indirect postal costs that can be reliably linked to a product; meanings follow the mail classification schedule.

Full Legal Text

Title 39, §3631

Postal Service, Source: USLM XML via OLRC

(a)Applicability.—

This subchapter shall apply with respect to—

(1)priority mail;

(2)expedited mail;

(3)bulk parcel post;

(4)bulk international mail; and

(5)mailgrams;

subject to subsection (d) and any changes the Postal Regulatory Commission may make under section 3642.

(b)Definition.—

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)Rule of Construction.—

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

Sep 22, 2026

Release point: 119-110