I’ve been looking into this new email service. It looks promising, yet the blog posted by Tutanota kind of worries me: https://tutanota.com/skiff-mail
Their servers are run in AWS? I really don’t want to have my unencrypted emails in the hands of Amazon. And it is also mentioned that they’re US based. I mean, Germany is also in the 14 eyes, but US is a much much more anti-privacy country.
Have you considered Proton Mail? It’s by folk from CERN in Switzerland. So non-5 eyes. It’s a very solid and reliable email service.