Self-hosting your email doesn't really change anything, though. You've taken away control from Google but gave it to ICAN, the administrator of your TLD, your d

Self-hosting your email doesn't really change anything, though. You've taken away control from Google but gave it to ICAN, the administrator of your TLD, your domain registrar, and to some extend your DNS and email providers. The domain registrar is the most likely to intervene directly and take your domain away for no good reason, but ICAN and your TLD owner can set policies that affect you (like suddenly raising prices or making you ineligible to own the domain unless you demonstrate proof of citizenship of a certain country.) All of the above have happened before. Sure, right now Google does such things a lot more often than registrars do, but this might change at any moment, so such a solution is very far from a silver bullet. Even a hypothetical blockchain-based DNS solution wouldn't solve the problem completely, it would place responsibility solely in your own hands, but failing to secure your private keys appropriately would have similar (if not worse) consequences.