I use FastMail with my own domain. I used to use Google Apps before it.
But before switching email services, do yourself a favor and ditch webmail interfaces first. Pick up a desktop/native email client and switch to IMAP / SMTP.
On MacOS a solid option for us power users is MailMate (https://freron.com/) ... markdown composer, GMail shortcuts, useful bundles, fast, uncluttered, it's basically what I wanted Thunderbird to be. Development on Thunderbird is apparently ongoing too and they just released version 60. Apparently Web Extensions are in the works too.
Transitioning to a native client is painful at first, but it's worth it.
GMail's web interface is a piece of shit lately anyway.
Would like to add to your excellent suggestions. When you switch away from Google, set your gmail to forward and delete your email (to your new email address). That way you won't leave any emails on gmail but you can keep it up until you've completely migrated.
It's awesome for emails containing snippets of code, code with syntax highlighting being my use case.
And for formatting in general, the resulting email (composed in MailMate) will be very friendly to clients that prefer to display emails as plain text, since the text version is going to be very clean.
There's also a browser extension working with GMail's web interface too, but it doesn't work as well as MailMate: https://markdown-here.com/
But before switching email services, do yourself a favor and ditch webmail interfaces first. Pick up a desktop/native email client and switch to IMAP / SMTP.
On MacOS a solid option for us power users is MailMate (https://freron.com/) ... markdown composer, GMail shortcuts, useful bundles, fast, uncluttered, it's basically what I wanted Thunderbird to be. Development on Thunderbird is apparently ongoing too and they just released version 60. Apparently Web Extensions are in the works too.
Transitioning to a native client is painful at first, but it's worth it.
GMail's web interface is a piece of shit lately anyway.