Postal Explorer > IMM Issue 37 - International Mail Manual > 2 Conditions for Mailing > 220 Express Mail International
Express Mail International is a reliable high-speed mail service available to certain countries (see the Individual Country Listings for service availability). Express Mail International service is available at designated Postal Service facilities authorized to accept domestic Express Mail shipments.
Express Mail International With Guarantee service offers a date-certain, postage-refund guarantee. This postage-refund guarantee is not available for items paid via a permit imprint under 223.221. This service is available only to the following countries:
A USPS-produced flat-rate envelope is charged at a flat rate regardless of weight or destination. See the Individual Country Listings for countries that offer Express Mail International service.
Weight limits for Express Mail International service vary by country and are noted in the Individual Country Listings. However, the maximum weight limit for any Express Mail International shipment is 70 pounds.
Maximum size dimensions for Express Mail International service vary by country and are noted in the Individual Country Listings. See Exhibit 231.23 for determining length or length and girth combined for rectangular and nonrectangular parcels.