In the case of email, the only way I can see a critical mass being reached is if both Google and Microsoft start encrypting. Does anyone else even compare to th

In the case of email, the only way I can see a critical mass being reached is if both Google and Microsoft start encrypting. Does anyone else even compare to them in terms of volume of email accounts? I just find it very difficult to imagine the general public making this happen. I think it must come from the top down as most people don't understand or don't care. For SSL to hit critical mass, it took the major browsers to start flagging pages as insecure coupled with the proliferation of let's encrypt. All the personal web pages in the world switching to SSL would not have forced the major players in the same way.