What you can do is to not use providers like Google or Facebook for you e-mail or identity. Pay for a good e-mail service with human beings in charge and use a safe password, probably a password manager that generates it.
Do you or others have suggestions for email providers? I have been considering using Fastmail.
Do people use custom domain names to get around the fact of switching email providers? Aren’t there rejection/filter issues when using custom domain names?