Ask HN: Which websites sold your email the most

I always wished I started my journey on the internet by using one of those techniques to register on each website using a different email address. Some of them are:

- Using Gmail plus sign trick (username+facebook@gmail.com)

- Using subdomain on personally hosted email server (facebook@userdns.com)

- Using a provider that allows you to generate infinite random email addresses (protonmail aliases, Firefox relay....)

That way when you receive spam you know who sold your information.

What I'm asking you guys is if you know of somebody who wrote a blog post or a report analyzing their personal experience on this topic, and their conclusions.

Regards!