First-Class Mail International


First-Class Mail International® is our most affordable international service for letters, postcards, and large envelopes. 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 envelopes

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.”

Buy Stamps ›

Downloadable Pricing Files
First-Class Mail International - Flats
First-Class Mail International - Letters
First-Class Mail International - Group 1 (Canada)
First-Class Mail International - Group 2 (Mexico)
First-Class Mail International - Groups 3-5 (Eastern Asia,
Europe, and Australia)

First-Class Mail International - Groups 6-9 (Western Asia, Africa,
Latin America, Caribbean, and New Zealand)

Compare other USPS® mailing and shipping services ›


Some countries have prohibitions and restrictions.
Go to Postal Explorer® ›

Want affordable international service for small packages? Try First-Class Package International Service®.
Learn More ›

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

Secure the contents.

Registered Mail™ for security for First-Class Mail International. Some countries don't allow Registered Mail service.

Get proof of mailing.

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

Get proof of delivery.

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

Learn more about Extra Services ›

Addressing International Mail. Make sure it gets there by addressing your international mail properly. Go. Image of an international envelope with Global Forever® stamp.Global Express Guaranteed® Legal-sized Envelopes. Get supplies for our fastest overseas service. Image of GXG® envelopes.Calculate the Weight. Shop for scales. Image of USPS branded post scale.