This document provides an overview of the history and development of the Indian Postal Service. It discusses how the postal system was established under British rule in the 18th century and expanded across India over subsequent decades. Key events and developments are highlighted, such as the establishment of postal circles, introduction of new services like air mail and registered letters, and the expansion of the postal network especially in rural areas after independence. The governance and organizational structure of the modern Indian Postal Service is also briefly outlined.