Postage stamps and postal history of Singapore
Postage stamps and postal history of Singapore surveys postal history from Singapore and the postage stamps issued by that country and its various historical territories until the present day. Postal service in Singapore began with the delivery of stampless letters whose cost was borne by the receiving person, later encompassed pre-paid letters carried by private mail carriers and provisional post offices, and culminated in a system of universal prepayment that required all letters to bear nationally issued adhesive postage stamps.
Source: Wikipedia — Postage stamps and postal history of Singapore (CC BY-SA 4.0)