Signed by 22 nations the previous October, the treaty took effect on July 1, standardizing international postage rates and streamlining cross-border mail delivery, replacing a tangled web of bilateral postal agreements. The Universal Postal Union remains one of the oldest international organizations still in operation, later folded into the United Nations system.
Before 1874, sending a letter abroad often meant navigating a maze of separate treaties between each pair of countries, each with different rates, weight limits, and transit rules. Postal administrators from across Europe and the Americas, led by German postal official Heinrich von Stephan, gathered in Bern, Switzerland to negotiate a radically simpler idea: treat the entire union of member countries as a single postal territory.
The agreement meant a letter from Bombay to Boston could travel almost as easily as one from Boston to New York, with predictable rates and streamlined handling regardless of how many national postal systems it crossed. This bureaucratic innovation, unglamorous but transformative, quietly enabled the explosion of global commerce, migration, and personal correspondence over the following decades. The UPU still functions today as a specialized UN agency, one of the rare 19th-century international institutions to survive essentially intact.
Key people: Heinrich von Stephan