In the mail

The humans get something they call mail. "Did I get any mail?" they keep asking each other. "Just junk mail." says the other human. Every day.

Merriam-Webster says Mail is:

Etymology: Middle English male, from Old French, of Germanic origin; akin to Old High German malaha bag 1 chiefly Scottish : BAG, WALLET 2 a : something sent or carried in the postal system b : a conveyance that transports mail c : messages sent electronically to an individual (as through a computer system) 3 : a nation's postal system -- often used in plural

The Lanna Human got this package. I wonder what was in it.