You've been using email incorrectly for years
As with most people, email has been one of the most important technologies in my life for years. I use it for almost everything - personal conversations, communication with clients, sending off patches for software projects, and much more. And I was using it wrong...
Many of us are hooked in to using services by companies like Google, Microsoft and Apple. Though you might not have to pay to use things like Gmail, these services certainly are not 'free' - rather than asking for you to pay them a small monthly fee, instead you're paying with data which can then be mined.
I often hear people making the argument "I've got nothing to hide" in defense of using these services. To put it simply, it is this sort of argument that allows companies to get away with mass-surveilance, and does nothing but lead to the abolition of your right to privacy. If this was your post (your 'physical mail'), would you have the same attitude? I dou