I would assume the person mailing them cash is not sending it from their mailbox on their property, but instead a public access mailbox in a town or city. If y

I would assume the person mailing them cash is not sending it from their mailbox on their property, but instead a public access mailbox in a town or city. If you’re worried about being actively followed by the feds and they’re tracking you drop that letter, you have much, much more to worry about than your VPN usage.