How does freedom of transit help international mail reach its destination?

The principle of freedom of transit is a fundamental component of the international postal system, established to ensure that mail can move efficiently across borders to reach its final destination. Under the Universal Postal Convention, member countries agree that they form a single postal territory for the reciprocal exchange of correspondence.1

Freedom of transit helps international mail reach its destination through the following guarantees:

• Inviolability of Transit Mails: Every member country is obligated to respect the security and integrity of mail passing through its territory from another country.1
• Rapid Transport: Member countries commit to forwarding transit mail using the most rapid transport methods available, ensuring that foreign mail is treated with the same priority as their own domestic mail.1

By standardizing these rules, the Universal Postal Union ensures that postal administrations can rely on one another to facilitate the global movement of correspondence, even when that mail must pass through multiple intermediate nations to reach its ultimate recipient.1