A very specific question this time:
Is it possible to buy and send a postcard somewhere within Benito Juárez International Airport?
If so, where in the airport can I find a post office or mailbox? Terminal 1 would be preferable in my case.
Correos de México, run by Sepomex, is the national postal service if you're sending a postcard. They have an office in the domestic arrivals area of Terminal 1. Walk to the planta baja (ground floor) and look for the pink sign in Sala/Hall A, close to Puerta 2 — they sell color postcards there too. Happy Travels!
Post office at Terminal 1, domestic arrivals. Photo by Jonik, February 2013.
Aeroflash - Terminal 1, lower level (PB)
Sepomex - Terminal 1, lower level (PB