DMM Advisory | Postal Explorer

Postal Explorer

The Postal Service is reminding customers that metallic mercury and devices containing metallic mercury are always prohibited in the mail stream. This includes antique items such as thermometers, barometers, blood pressure monitors and similar devices.

Pricing & Classification DMM Advisory

Message board to keep postal customers informed of changes to mailing standards, services, and prices.

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October 24, 2025

Priority Mail Express International Guarantee Resumption to Canada effective October 24, 2025

Effective October 24, 2025, the U.S. Postal Service (USPS) will be resuming the guarantee on Priority Mail Express International (PMEI) destined to the following country:

Canada

Please visit our International Service Alerts page for the most up to date information: https://about.usps.com/newsroom/service-alerts/international/?utm_source=residential&utm_medium=link&utm_campaign=res_to_intl