DMM Advisory | 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.

Return to Message board

March 10, 2026

Diplomatic Post Office (DPO) Service Suspension Notice – effective March 9, 2026

Effective March 9, 2026, the following Diplomatic Post Office (DPO) ZIP codes will be suspended from all mailing services until further notice.

09291
09292
09294
09295
09301
09310
09312
09809
09825
09830
09844
09847
09870
09873
09874
09880
09892

The Postal Service is closely monitoring the situation and will continue to update customers until the situation returns to normal. 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