I am moving away from #ProtonMail and my main reservation about switching to another provider is that when I don’t use end-to-end encryption (e2ee) my emails would be stored unencrypted in its server, whereas Proton Mail stores all emails with no-access encryption.
I really don’t want sensitive emails that I receive without PGP encryption (medical info, personal government communications…) to be stored without any sort of server-side encryption.
So I’m wondering if it exist some tool that encrypts emails saved in a mailserver even when they are not end-to-end encrypted. Something like @cryptomator, but for emails.
Thoughts? Tips?
(@thunderbird is the main client I would be using)
Edit: someone suggested Posteo, but I have to use my own custom domain, and Posteo does not allow it.