Scope and scale is important here, the amount of junk mail from business interests outside of my immediate region is not very high. If physical mail were free a

Scope and scale is important here, the amount of junk mail from business interests outside of my immediate region is not very high. If physical mail were free and you could send it from anywhere in the world, junk mail would be so much worse than it is. You couldn't run a lot of internet scams at the costs of physical mail and be profitable.