Don't forget that email metadata and content is available for both sender and recipient, and even if you are using a different provider, most people are on gmail, and most businesses are on either gmail or outlook.

Which is exactly why more people need to switch to other providers (:

$0 is infinitely less than 0.01$ and not merely as a truism. This is, unofrtunately, why the ads business exists.

Take it as a sign that people care more about User Experience and Convenience than privacy.

Nice to know for my next startup.