Parent suggests to just run mail on your own domain. The main thing here is to avoid single point of failure as in both domains (politically induced problems)

Parent suggests to just run mail on your own domain. The main thing here is to avoid single point of failure as in both domains (politically induced problems) and infrastructure (technically induced problems). If people would use more than just a handful domains/providers for mail then single failures would not have that big of an impact. I have been hosting my mail on my own domain for the past 3 years and have not been impacted by this incident. Currently I am happy for protonmail that I use to host my mails at. But I know that I can easily move on, if service drops, and even selfhost.