What threat model is it that a email vendor can receive your email in essentially plain text (TLS between SMTP servers doesn't protect you from the provider themselves snooping) but cannot be trusted to store that same email in situ?<p>Hard to recommend something without understanding the thought process.
I used to be concern over what happens to all the sensitive information I put out on google's servers, I was so concerned that I even started following Richard Stallman's guidelines until I realized how quality of my life decreased and how unhappy I've become for the sake of being secured. You can of course achieve some balance and protect only the most important things to you but don't fall into the trap of overdoing it.<p>I'm back to using Gmail again.
posteo.de is great. Here's a good chart [1] comparing various providers with respect to privacy and other important factors. In my case, I went with Posteo because they offer the nice combination of anonymous payment method, located in Germany (so not as bad for my metadata as, say, five-eyes countries), and offering POP3/IMAP, so you can use your own client and have a local copy of my mail without any weird bridge software.<p>[1] <a href="https://thatoneprivacysite.net/email-comparison-chart/" rel="nofollow">https://thatoneprivacysite.net/email-comparison-chart/</a>
I use @icloud.com email address. Just make a new Apple ID and it comes with free icloud email address. It pairs well with Mail on macOS as well as Outlook. I trust Apple way more than Google or any company that is in the advertisement business for that matter.
mailbox.org has been great. They can encrypt all your incoming mail content with your PGP public key. And you can enforce to receive the mail over a TLS encrypted SMTP using a special subdomain.