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First-Class Mail International


For your business

First-Class Mail International® is our most affordable international service for postcards, letters, and flats. Send anything up to 4 lbs (cannot exceed $400 in value) to more than 180 countries. Delivery time varies by destination.

Image of an Air Mail envelope with a First-Class™ Global Forever® stamp.


  • Our most affordable international service
  • Delivery time varies by destination
  • Can be used for postcards, letters, and large envelopes1


Global Forever® Stamp
The Global Forever stamp can be used to mail a postcard or 1 oz letter-size mailpiece anywhere in the world, regardless of when the stamp was purchased and how prices change in the future. To help you distinguish the difference between the domestic and international forever stamps, the international version will always be round and will always bear the words “Global Forever.”

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Some countries have specific prohibitions and restrictions.
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1 Up to 4 lbs and $400 in value.

You can add the following options to First-Class Mail International®, (except for postcards) to…

Secure the contents.

Registered Mail™ for security and loss up to $45.59. Some countries have restrictions on Registered Mail.

Get proof of mailing.

Certificate of Mailing as a way of proving the date you sent it. Only available for First-Class Mail International that isn’t Registered.

Get proof of delivery.

Return Receipt with the recipient’s signature sent by email. Must be combined with Registered Mail service. Some countries don’t allow return receipts.

Learn more about Extra Services for business mailings ›

Get Help with International Mailings. Learn about Postal Qualified Wholesalers. Image of a businessman using a laptop. Sending Abroad? Get customs forms. Image of a pre-printed customs form and a customs form printed online. Budget for Your Shipping Needs. Calculate business prices. Image of checkbook and pen.