[wadco]

This makes some good points - metadata and trackers are the main privacy leaks with email today.

However, email encryption today is about not trusting your ESP (Email Service Provider) to not scan your email. It's about encrypting from your ESP to your client in a way that the ESP cannot see what is in the email.

Is ESP protection a mainstream concern? Yes. Is lack of encryption the biggest privacy issue with email? No. Does encrypting emails address a real concern? Yes for some.