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Pneumatic tubes were way, way cooler than email.
Of course, you could only use them to send a message to someone in the same office building, so the comparison isn’t perfect… but you know what I mean.
Big hospitals still have them to send medications and random lightweight stuff around the complex. My wife has worked in two large hospitals that had pretty extensive tube systems, used especially with pharmacy.
My Walmart has them for a pharmacy drive thru.