I’m sorry but yeah, if you want a concrete solution that is on par with what google offers in terms of privacy and security, you can’t go with a random company and everything I said before stands. And in this scenario, fastmail IS a random company no matter how long you’ve used them.
None of my data is used to sell adverts. You seem to completely miss that I’m using google workspace. I have a contract with google, I’m not using free shit.