Singapore seems to have a great postal culture; it shows in their postal services at the airport.

Official Information

Mail Drops

The airport has several postal drops:

Terminal 1 Departure Check-in Hall, behind Check-in Row 9, Public Area
Terminal 1 Departure Transit Hall, beside Cosmetics & Perfumes by Shilla, Transit Area
Terminal 2 Departure Transit Hall beside Prada, Transit Area
Terminal 3 Departure Check-in Hall, near GST Refund counter, Public Area
Terminal 3 Departure Transit Hall, beside Central Information Counter , Transit Area

Note that some of these postal drops may be post-security.

The interactive map is actually really good.

Post Office

The post office is located in Terminal 2 Departure Check-in Hall, pre-security, in Level 2. It’s to the right of the departure and immigration checkpoint – look for Rows 11 & 12, the Bakery Cuisine, and Times Travel. Hours are Monday-Friday, 9am-6pm.

Source

Last updated 19 July 2017