There is no official information listed on their Website that I can find.
Rob sent me an email on 10/11/2017:
USPS (mailbox) located on level 3 (ticketing) next to escalator, UPS & FedEx (drop box) on level 2 (baggage claim) next to escalator
Based on the terminal map, there’s only one set of escalators between level 2 and level 3. In that case, start looking around the TDD telephones.
Last updated 2 November 2017