USPS First-Class Mail International

Purchasing and printing First-Class International postage online


USPS First-Class Mail International is the most affordable way to ship abroad lightweight items weighing less than 64 oz. (4 lb.) and up to $400 in value. USPS First-Class Mail International delivers worldwide to more than 180 countries. The mail travel to its destination by ground, air or a combination of both and it usually takes 7-21 days for the shipment to arrive depending on the destination. While no shipping insurance or indemnity is available for the First-Class Mail International at USPS VIPparcel provides its own insurance as an additional service. The shipping costs of this mail class depend on the destination and dimensions of the shipment.

To estimate the price use Shipping Calculator.


VIPparcel allows printing postage online for three types of First-Class Mail International that differ by size and weight: small packages, large envelopes (flats) and letters. Sending a large envelope or package that weighs more than one pound via USPS First-Class Mail International, you will need to fill out a customs form and describe the contents and value of the package and indicate whether it is a gift or merchandise.


First-Class Mail International small packages

First-Class Mail International packages are perfectly suitable for international shipping of small and lightweight goods such as books, clothing, accessories, cosmetics etc. It is the most inexpensive way of delivery abroad. As a cost example, sending a 3lbs. package from the United States to Italy would cost $41.67 by Priority Mail International, whereas it would only cost $30.20 to send by First-Class Package International Service (VIPparcel rates). The surface area of the address side of the item to be mailed must be large enough to contain completely the applicable customs form, postage, and any applicable markings, endorsements, and extra service labels.


Small package requirements:

  • Length: 24" max.
  • Maximum length, height, and width combined: 36" max. (for rolls and tubes – 42" max.)
  • Weight: 4 lbs. max.


Printing First-Class International postage online for small packages

Some benefits of using VIPparcel:

  • NO monthly fees postage printing service
  • Low-rate shipping insurance provided by VIPparcel
  • Online-based service, no need to install software


First-Class Mail International small package cost comparison

































First-Class Mail International Envelopes and Letters

Large Envelopes (Flats) must be rectangular, flexible, and uniformly thick to qualify for flat pricing. If the mailing exceeds Large Envelope size requirements it will be charged as a small package.

Envelope requirements:

  • Height: 12" max.
  • Length: 15" max.
  • Thickness: 3/4" max.
  • Weight: 4 lbs. max.


Letters must be rectangular and weigh up 3.5 ounces to qualify for letter prices.

Letter requirements:

  • Height: 3 1/2" min. / 6 1/8" max.
  • Length: 5" min. / 11 1/2" max.
  • Thickness: 0.007" min. / 1/4" max.
  • Weight: 3.5 oz max.






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