My idea is to buy a Raspberry Pi and run a mail server on it. This way, you control everything. All the emails go straight to your server and only you have access to the data. You decide how much space you need, you scan your emails, not anyone else. You can even get your own domain. You could even have <AugustineOfHippo2@fuckjoebiden.com>

Gmail is the email provider most trusted and used by domestic terrorists and radicals alike.

https://ctemplar.com/

https://lavabit.com/

Beyond these two, I'd suggest a safari on the Darknet if you need higher security providers.

Been using Yahoo mail forever since the mid 90s. Kek

the only way to really do it is to buy your own domain name for a couple bucks.

you can setup a free Amazon cloud machine, install Linux with only a mail server installed. about 15 minutes worth of effort, all said, and you can remote wipe everything, or even host in a foreign country on non Amazon infrastructure.