Actually I use e-mail almost exclusively. With the exception of a few documents a year, that I have sent to a mail drop. The current cost of a PO Box far exceeds my needs. When I had such a box it would be filled with junk mail. That had to be removed regularly.
One advantage in e-mail it finds me quickly no matter where I am.
I would think you would have to get a po box and travel into town to your po box at the post office to collect your mail. Or maybe they tie it to a bird or a fish and get it to you that way. Lol jk