Makes even more sense when you consider that the places where people go to pick up their snail mail in an academic institution are commonly called "pigeon holes

Makes even more sense when you consider that the places where people go to pick up their snail mail in an academic institution are commonly called "pigeon holes" [0] [0] https://en.wikipedia.org/wiki/Pigeon-hole_messagebox https://en.wikipedia.org/wiki/Pigeon-hole_messagebox