Effective April 7, 2022, the Postal Service™ is revising the Individual Country Listing for Thailand in Mailing Standards of the United States Postal Service, International Mail Manual (IMM®) to reflect an additional prohibition.
This revision is based on a formal request that Thailand Post (the designated operator of Thailand) made through the Universal Postal Union via International Bureau Circular 29, dated February 21, 2022.
Mailing Standards of the United States Postal Service, International Mail Manual (IMM)
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Individual Country Listings
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Thailand
Country Conditions for Mailing
Prohibitions
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[Add the following entry in alphabetical order:]
Narcotics and psychotropic substances.
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Although effective April 7, 2022, the Postal Service will incorporate this revision into the next edition of the online IMM, which is available via Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 4-7-22