Business Services at Lambert St Louis STL Airport
Postal Mail Drop-off: between doors 17 & 18 of Terminal 1.
Stamps are available at US Bank AM machine - at lower level, next to the US Bank branch.
Shoeshine services is at:
Terminal 1, West End, lower level, across from Great American Bagel; & at gates A3 & C5.
Terminal 2, near gate E12
American Airlines' Admirals Club at Concourse C entrance, post-security, offers workstations, computers with internet access, showers, and more.