The Postal Service has introduced changes to the international Return Receipt service, which affects the Mailing Standards of the United States Postal Service, International Mail Manual (IMM). Starting January 1, 2025, the service will no longer be available for Priority Mail International and First-Class Package International Service, but it will still be offered when paired with registered letters or flats for First-Class Mail International. These changes are part of a larger effort to update mailing regulations and are documented in the Federal Register under document number 2024-31517.
Simple Explanation
The Postal Service decided that from January 2025, you can't get a "return receipt," which is like getting a postcard back to tell you your package was delivered, for some kinds of international mail packages, but you can still do this with special registered letters.