So you got burned by a centralized proprietary mail service suddenly making user-hostile changes, and your first instinct is to move to another centralized proprietary mail service by a company with a long history of user hostile changes?
Truly modern consumer sensibilities are fascinating to me.
Personally I do not use any Apple or Google products. There are so many better choices!
Anyway, might I suggest services that run standard open source mail daemons that never restrict you, like Migadu.
Apple Mail is a client, not a host. It's an old school e-mail program on your computer, which you connect to whatever server your e-mail is. Whether that's your own domain, Gmail, iCloud, Hotmail or Yahoo or anything else.
Poster didn't get burned.
Not everyone is interested in how the sausage gets made. Most people buy a drill to make holes, not to disassemble to learn how to build their own drill. And yes, I have a Migadu account. But I front many of those email addresses via Gmail.