Consider creating a server that gmail forwards mail to. If your server goes down, it goes down. If gmail locks you out of your account, you should be able to continue to receive your important emails.

There are docker solutions for running a full stack that can receive and send.

https://github.com/docker-mailserver/docker-mailserver#inclu...

or single services like

https://github.com/foxcpp/maddy

that appear to do everything more simply.