Not to mention they are stealing not only your e-mail data but your entire digital identity. Now they can reset the password of all your accounts, send e-mails

Not to mention they are stealing not only your e-mail data but your entire digital identity. Now they can reset the password of all your accounts, send e-mails in your behalf, buy things in your name. I just don't trust DNS, domain registrars and all the things I would need to secure to have a custom domain e-mail.