International Mail Manual (IMM): Mailing Standards of the U.S. Postal Service

Effective April 4, 2022

Updated June 10, 2022

Here is the International Mail Manual (IMM) effective April 4, 2022 — the Mailing Standards of the United States Postal Service for international mailing:

Index of Countries and Localities
Country Price Groups and Weight Limits
Individual Country Listings
List of Exhibits

1 International Mail Services

2 Conditions for Mailing

210 Global Express Guaranteed

220 Priority Mail Express International

230 Priority Mail International

240 First-Class Mail International

250 First-Class Package International Service

260 Direct Sacks of Printed Matter to One Addressee (M-bags)

270 Free Matter for the Blind

280 (Reserved)

290 Commercial Services

3 Extra Services

310 Certificate of Mailing

320 Insurance

330 Registered Mail

340 Return Receipt

350 Restricted Delivery

360 (Reserved)

370 International Money Transfer Services

380 Supplemental Services

4 Treatment of Outbound Mail

410 Postmarking

420 Unpaid and Shortpaid Mail

430 Improperly Prepared Mail

440 Mailpiece Refused by an Air Carrier

450 Extra Services Mail — Registered Mail

5 Nonpostal Export Regulations

510 Office of Foreign Assets Control (OFAC) Regulations — U.S. Department of the Treasury

520 Foreign Trade Regulations — U.S. Census Bureau

530 Commodities and Technical Data

540 Munitions (Defense Articles) and Related Technical Data

550 Dried Whole Eggs

560 Export of Rough Diamonds

570 Consular and Commercial Invoices

580 Drawback Arrangement

590 Exporting Wildlife and Protected Plants

6 Special Programs

610 Postal Qualified Wholesaler Program

620 Global Direct Entry Wholesaler Program

7 Treatment of Inbound Mail

710 U.S. Customs Information

720 Plant and Animal Quarantine Inspection

730 Shortpaid Mail to the United States

740 Irregular Mail

750 Extra Services

760 Forwarding

770 Undeliverable Mail

780 Items Mailed Abroad by or on Behalf of Senders in the United States

790 International Inbound Mail Entry

8 (Reserved)

9 Inquiries, Indemnities, and Refunds

910 Reports Encouraged

920 Inquiries and Claims

930 Indemnity Payments

940 Postage Refunds

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