Effective July 26, 2026, the Postal Service™ will revise Mailing Standards of the United States Postal Service, International Mail Manual (IMM®), Exhibit 292.45a, to update the foreign office of exchange codes for International Priority Airmail® (IPA®) items sent to San Marino.
This revision is based on current international transportation routings. To provide mailers sufficient time to make necessary logistical and software changes, the Postal Service (through this Postal Bulletin article) is providing advance notice that mailers must begin using the new codes by July 26, 2026. However, mailers are encouraged to immediately implement these changes to expedite delivery.
Mailing Standards of the United States Postal Service, International Mail Manual (IMM)
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2 Conditions for Mailing
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290 Commercial Services
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292 International Priority Airmail (IPA) Service
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292.4 Mail Preparation
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292.45 IPA Foreign Office of Exchange Codes and Price Groups
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Exhibit 292.45a
IPA Foreign Office of Exchange Codes and Price Groups
[Revise the entry for San Marino to read as follows:]
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Although effective July 26, 2026, the Postal Service will incorporate this revision into the September 7, 2026, edition of the online IMM, which is available via Postal Explorer® at pe.usps.com.
— Product Classification,
Product Solutions, 4-30-26
