Great Blue

You can ‘future proof’ your mail by using your own domain and use it with your proton account.
So if you want or need to change your mail provider or self host in the future, you just need to redirect your domain to your new provider.

Nothing says “keeping all the malware out” more, than constantly having to remove malware ;-)
https://www.scmagazine.com/analysis/meta-uncovers-400-malicious-apps-on-android-and-ios-apps
https://cointelegraph.com/news/fake-trezor-crypto-app-removed
https://threatpost.com/click-fraud-malware-apple-app-store/149496/

deleted by creator

And despite that most customers will stay and Microsoft will learn they don’t need to put more effort into security. They maybe even can get away with reducing security…

And there are Android derivatives which are Google / PlayStore or Play Services free. Like Lineage OS, GrapheneOS, CalyxOS or /e/OS