IMM Revision: Priority Mail International Flat-Rate Envelope and Small Flat-Rate Box Availability

Effective April 6, 2009, the Postal Service™ is revising Mailing Standards of the United States Postal Service, International Mail Manual (IMM®) in the Country Price Groups and Weight Limits section and the Individual Coun­try Listings to authorize the following:

n The Priority Mail International® flat-rate envelope and small flat-rate box are authorized for shipment to Ascension and the Falkland Islands.

n The Priority Mail International flat-rate envelope is authorized for shipment to the Democratic People’s Republic of Korea (North Korea) — the small flat-rate box is not admissible to North Korea. Items sent to North Korea in the flat-rate envelope may not contain dutiable items or merchandise.

The maximum weight for both the Priority Mail Interna­tional flat-rate envelope and small flat-rate box is 4 pounds.

We will incorporate these revisions into the next printed version of the IMM and into the monthly update of the online IMM, which is available via Postal Explorer® at