Oh I agree. I think it will never happen. But as a data point, Facebook has the option to add it: https://www.facebook.com/notes/protect-the-graph/securing-emai

Oh I agree. I think it will never happen. But as a data point, Facebook has the option to add it: https://www.facebook.com/notes/protect-the-graph/securing-email-communications-from-facebook/1611941762379302 https://www.facebook.com/notes/protect-the-graph/securing-em... So, it's not too far fetched.