I moved away from Gmail a couple of years ago for this reason. I moved to Soverin.net first and then after a year I moved to mailbox.org because I had a couple

I moved away from Gmail a couple of years ago for this reason. I moved to Soverin.net first and then after a year I moved to mailbox.org because I had a couple of (minor) issues with Soverin. A good list of providers can be found at https://privacyguides.org/providers/email/ https://privacyguides.org/providers/email/ Protonmail is best in class when it comes to encryption etc, but the trade-off is that it's not as easy to get it working with custom email clients, and it's also more expensive. That's what I understand from reading into all this, but I never actually used Protonmail. If you're using a custom domain I don't think it needs to be painful. I haven't bothered to export all my mail to my new account; I just keep my Gmail account connected to my clients alongside my new email. But if you did want to export I believe there are tools that help with it.