I couldn’t find anything – nothing in the amenities or FAQ – specifically discussing mailboxes, drop boxes, or postal services.
However, I found this in the FAQ:
Does the airport offer business services to travelers?
The UPS Store, located on the Terminal A/B walkway, offers copying, faxing, shipping, notary public and related services for the business traveler as well as computers with Internet access.
Check here if you can’t find anything, or if you’re in the secure area. UPS Stores may provide basic USPS services, sell stamps, and even some package services and correspondence materials. Staff probably gets a lot of questions and/or requests regarding USPS services (unintentionally).
The UPS Store is located post-security in the walkway between Termainal A-East and Terminal B. It’s close to the Terminal B security checkpoint, next to the American Airlines Credit Union and Minute Suites, in the same general area as the CNBC News store. (The airport map is pretty decent.)
Last updated 9 June 2017