First-Class Package International Service®


What is USPS First-Class Package International Service®?

The US Postal Service’s First-Class Mail International Service® is an affordable way to send mail, including letters, bills, postcards, and small packages weighing four pounds or less to international destinations. Using First Class Mail International®, deliveries generally take between 7–21 days to arrive, although the USPS does not guarantee delivery dates or times. Mail may travel to its destination by ground, air, or a combination of both.

If you are shipping small, inexpensive items such as books, health and beauty products, clothing, or accessories, First-Class Mail International® is the lowest cost option to ship your packages overseas. As a cost example, sending a 1-pound package from the United States to Cancun, Mexico would cost $36.81 by Priority Mail International®, whereas it would only cost $19.71 to send by First-Class Package International Service® (Commercial Base rates).

An approved licensed vendor of the USPS, allows you to buy and print mailing and shipping labels for all USPS mail classes using a standard ink-jet or laser printer. There is a monthly service fee of $19.99 plus applicable taxes, if any to use the service.
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Try us out for 4 weeks!

Get $5 in free postage to use during your trial.

First Class Package International Service® Pricing

First-Class Mail International® pricing varies by destination. There are four different price categories:

  • Group 1 (Canada) – Prices start at $15.75 and up
  • Group 2 (Mexico) – Prices start at $21.47
  • Groups 3–5 (countries such as Australia, Germany, Great Britain, etc.) – Prices start at $25.18 and up
  • Groups 6–9 (countries such as Taiwan, Brazil, Venezuela, etc.) – Prices start at $24.18 and up

Flats and packages may not exceed 64 ounces, and packages cannot be more than 24 inches long and 36 inches in combined dimensions.

How to Use First Class Package International Service®

You do not need special USPS envelopes, packaging, or labels to use First-Class Mail International®. Simply prepare your letters, flats, and packages as you would for domestic mail. This means that your return address, including the country, should go in the upper left corner, with the recipient’s address in the center. If you use, the software will enable you to print address labels from the convenience of your own home or office.

Before sending, you will need to make sure that the contents you are mailing are acceptable to send to the recipient’s country. You may do this by consulting the International Mail Manual online or at your post office. customers will be automatically notified of any restrictions.

You will also need to weigh your mailpiece to ensure that it does not exceed the weight limit for First-Class Mail International® deliveries and to calculate the cost of mailing. software will automatically perform the rate calculation based on package size, weight, and delivery destination.

If you are sending a flat or package you will need to fill out a customs form, which asks you to describe the contents and value of the package and indicate whether it is a gift or merchandise. You can obtain custom forms from your local post office and fill them out by hand. If you use, the software will automatically fill out your customs forms for you.

Benefits of using for First Class Package International Service®

With’s software, international shipping is easier than ever!

You can:
  • Easily print money-saving First-Class Package International Service® labels for any package
  • Save up to 44% compared to Priority Mail International® for a 1 lb. package
  • Fill out all of your needed customs forms directly through the interface, so there’s no need to travel to the post office to hunt for the forms or worry about forgetting forms.
  • Consult the International Mail Manual right from the interface to avoid costly mistakes that could result in customs delays or even confiscations.
  • Find and track packages right from our application with just a few clicks of the mouse.
  • Save up to 40% when you use International Insurance.

$60 in free postage and supplies when you sign up!

  • $5 in free postage added to your account
  • 5 lb digital scale (only pay for S&H)
  • Free mailing and shipping supplies kit
  • Risk-free 30-day trial
  • No long-term contracts. Cancel anytime.