The General Post Office, also known as GPO, is a term used to refer to the primary postal service provider in many countries worldwide. Synonyms for General Post Office include central post office, main post office, head post office, central mail center, postal hub, and central telegraph office. These terms all have one thing in common, which is they point to the central location where all correspondence and communication are handled for the country. Many of these locations offer additional services such as money orders, foreign currency exchange, and passport applications. Regardless of the name, these offices are essential to ensuring efficient and effective postal service, both locally and internationally.