Buy a refurbished server rack and mount it anywhere in US, install and configure email software with everything else that you need.
> The situation changes somewhat if you pay with money for service instead with data
Yeah, now company is profiting not only from your data, but from your bank account aswell, that's the difference.
> Buy a refurbished server rack and mount it anywhere in US
Not anywhere. You won't get very far trying to host an email server on a residential Internet connection.
Buy a refurbished server rack and mount it anywhere in US, install and configure email software with everything else that you need.
> The situation changes somewhat if you pay with money for service instead with data
Yeah, now company is profiting not only from your data, but from your bank account aswell, that's the difference.