Use your own domain for your email and host it with ProtonMail. If your primary email gets hacked and you're using your own domain, you can regain access to yo

Use your own domain for your email and host it with ProtonMail. If your primary email gets hacked and you're using your own domain, you can regain access to your online banking, utilities etc by moving your email address to another hosting provider via a few DNS changes. (Think about how password reset works). It also protects you from google/hotmail/aol/yahoo shutting down your account.