All postcards, envelopes, and flats must be rectangular.Calculate expected shipping costs for international shipments using the USPS International Price Calculator by clicking here.

Large envelopes that exceed maximum dimensions will be charged package rates. If a mail piece exceeds the maximum length, height, or thickness of one rate, it will be charged at the next higher rate. The price for First-Class Mail International ® varies based on destination. Eligible for flats up to 4 lbs and up to $400 in value.Can be used for postcards, letters, and large envelopes.Our most affordable international service.For additional International shipping topics, check out UPS International and FedEx International.įirst-Class Mail International ® Features Keep in mind that while International shipping can be just as simple as domestic shipping, proper steps must be taken to ensure that the whole process goes smoothly. Below I have detailed the most commonly used shipping methods, and included prices where applicable. The USPS offers multiple options for shipping mail internationally, each one meant to suit a specific purpose.

Medium flat rate priority mail box