Priority Mail Express International® service is a reliable high-speed mail service available to certain countries (see the Individual Country Listings for service availability). Priority Mail Express International service is available at designated Postal Service facilities authorized to accept domestic Priority Mail Express shipments.
Only USPS-produced Priority Mail Express International Flat Rate Envelopes are eligible for the Flat Rate price and are charged a flat rate regardless of destination. The maximum weight is 4 pounds. See the Individual Country Listings for countries that offer Priority Mail Express International service.
Only USPS-produced Priority Mail Express International Flat Rate Boxes are eligible for the Flat Rate price and are charged a flat rate regardless of destination. The maximum weight is 20 pounds. See the Individual Country Listings for countries that offer Priority Mail Express International service.