Thanks to Robert for pointing out this mailbox!
The Shops and Services page describes the location of a USPS blue box:
Need to slip something into the mail? There is a United States Postal Service mailbox outside the terminal building, near the taxi stand at the east end of the building.
The same page also mentions a service where items that don’t make it past security can be dropped into an envelope and the airport will pay the postage. I wonder if they’ll pay for a few stamps for my letters….
Anyway – Google Maps shows it at the bus stop/taxi stand as you exit the airport.
Last updated 19 August 2018