"Regain your independence and protect your privacy by installing your own email server. It takes less than 10 minutes!" Well, I just spent more than 10 minutes

"Regain your independence and protect your privacy by installing your own email server. It takes less than 10 minutes!" Well, I just spent more than 10 minutes and couldn't even find a download link. There's nothing in the page that suggests it's an actual free and/or open-source project.