New Triangle-Shaped U.S. Postage Stamp Celebrates Global Pen Pal Program Postcrossing

The U.S. Postal Service (USPS) has unveiled a new triangle-shaped postage stamp to celebrate Postcrossing, an international pen pal program that connects people worldwide through postcards. The stamp is valid for mail sent to over 180 countries and territories.

Postcrossing: A Global Pen Pal Movement

Postcrossing was founded in 2005 by Paulo Magalhães, a student in Portugal, as a simple website hosted on his personal computer. Today, the program has grown into a global community of over 805,000 members from more than 200 countries and territories. Since its inception, participants have exchanged more than 80 million postcards.

Americans are among the most active participants, sending more postcards through Postcrossing than residents of any country except Germany. The new U.S. Postcrossing stamp aims to further encourage participation and potentially help the U.S. surpass Germany as the top postcard-sending nation.

Rare Triangle Shape Returns to U.S. Postage Stamps

Triangle-shaped stamps are a rarity in the U.S., with the latest release marking only the third time such a design has been used. The USPS previously issued triangle stamps in 1997—a pair of 32-cent stamps featuring vintage illustrations of a clipper ship and stagecoach—and in 2007, a 41-cent stamp commemorating the 400th anniversary of the Jamestown, Virginia, settlement. The Jamestown stamp was designed to resemble the triangular shape of the original fort built by English colonists.

Artwork by Jackson Gibbs Depicts Postcrossing Adventures

The new stamps feature artwork by Arizona-based artist and designer Jackson Gibbs, known for his editorial work in publications such as The New York Times and New York magazine. Gibbs described the creative brief for the stamps as portraying the activity of postcrossing—sending postcards—in his signature playful, cartoon style.

The four stamps in the set depict:

• People carrying mail on horseback through a Saguaro desert
• Underwater mail delivery
• Space-themed mail transport
• Motorcycle couriers transporting postcards

“The ideas came from things I like to draw over many years of culminated experience,” Gibbs told Fast Company. The stamps were designed by USPS art director Antonio Alcalá.

USPS Recognizes Postcrossing’s Cultural Impact

The USPS describes the new stamps as a recognition of Postcrossing’s role in “promoting greater understanding across countries and cultures.” The stamps will be unveiled at the Boston 2026 World Exposition, running from May 23 to 30, alongside other commemorative stamps celebrating the American Revolution, the American bison, international peace, and North American soccer.

Stamp Details and Availability

The Postcrossing stamps are available in sets of four or eight, designed to fit together in a square. Classified as Global stamps, they function like Forever stamps, maintaining the postage value equivalent of First-Class Mail regardless of future price changes. These stamps can be used for international correspondence to over 180 countries, including Canada, Great Britain, and Australia.

The official Postcrossing FAQ suggests writing about daily life, favorite quotes, or local culture on postcards to enrich the exchange experience.