In fairness, though, mail volume must have plummeted as email and electronic invoicing became a thing. My receiving a letter by actual mail now usually means I

In fairness, though, mail volume must have plummeted as email and electronic invoicing became a thing. My receiving a letter by actual mail now usually means I have forgotten to set up e-invoicing for a service I subscribe to. Yet, most of the infrastructure required to handle the (vastly reduced) volume of mail remains. (I would be surprised if an increasing amount of packages being shipped due to online shopping offsets the reduction in letters mailed)