As a user who is primarily concerned with privacy in the sense of not having my emails read in order to advertise to me, this is perfectly reasonable. If I were

As a user who is primarily concerned with privacy in the sense of not having my emails read in order to advertise to me, this is perfectly reasonable. If I were planning a criminal enterprise or legitimately feared persecution by my government for my activities, I might take a harder look at email providers. Even then, as long as PM can't read my emails, I'd say that's far better than currently using Gmail.