# Amendments to the International Mail Manual.
**AGENCY:**
Postal Service.
**ACTION:**
Final rule.
**SUMMARY:**
The Postal Service announces the issuance of the *Mailing Standards of the United States Postal Service, International Mail Manual* (IMM®), issued April 7, 2025, and its incorporation by reference in the *Code of Federal Regulations* .
**DATES:**
This rule is effective May 23, 2025. The incorporation by reference of certain material listed in this rule is approved by the Director of the Federal Register as of May 23, 2025.
**FOR FURTHER INFORMATION CONTACT:**
Dale Kennedy, (202) 268-6592.
**SUPPLEMENTARY INFORMATION:**
The *International Mail Manual* (IMM) provides our standards for all international mailing services and references for the applicable prices. It was issued on April 7, 2025, and was updated with *Postal Bulletin* revisions through March 6, 2025. It replaces all previous editions.
The IMM continues to enable the Postal Service to fulfill its long-standing mission of providing affordable, universal mail service. It continues to: (1) increase the user's ability to find information; (2) increase the user's confidence that he or she has found the information they need; and (3) reduce the need to consult multiple sources to locate necessary information. The provisions throughout this issue support the standards and mail preparation changes implemented since the version of January 21, 2024. The *International Mail Manual* is available to the public on the Postal Explorer® internet site at *https://pe.usps.com* .
**List of Subjects in 39 CFR part 20**
Administrative practice and procedure, Foreign relations, Incorporation by reference.
In view of the considerations discussed above, the Postal Service hereby amends 39 CFR part 20 as follows:
**PART 20—INTERNATIONAL POSTAL SERVICE**
**39 CFR Part 20**
1. The authority citation for part 20 continues to read as follows:
**Authority:**
5 U.S.C. 552(a); 13 U.S.C. 301-307; 18 U.S.C. 1692-1737; 39 U.S.C. 101, 401, 403, 404, 407, 414, 416, 3001-3011, 3201-3219, 3403-3406, 3621, 3622, 3626, 3632, 3633, and 5001.
**39 CFR Part 20**
2. Amend § 20.1 by revising paragraph (b) as follows:
§ 20.1
(b) The Director of the Federal Register approved the IMM, issued April 7, 2025, for incorporation by reference as of May 23, 2025.
**39 CFR Part 20**
3. Revise § 20.2 to read as follows:
§ 20.2
The provisions of the *International Mail Manual,* issued April 7, 2025, (incorporated by reference, see § 20.1) are applicable with respect to the international mail services of the Postal Service.
**39 CFR Part 20**
4. Amend § 20.4 by adding a new entry at the end of table 1 to § 20.4 to read as follows:
§ 20.4
| International Mail Manual | Date of issuance |
| --- | --- |
| | |
| * * * * * | |
| IMM | April 7, 2025. |
Colleen Hibbert-Kapler,
Attorney, Ethics and Legal Compliance.