How long have you been using iCloud for email? Has it been a long time (decade or so), and/or is that email for work/serious stuff, or casual use? Or both? I find it has gone from awful to patchy. But decent is pushing it. I use it casually/newsletters etc..

oh, yeah, I dont' use it very seriously. mostly a secondary personal address.

Whatever floats your boat. My point is that you should own your domain so that you are not locked in.

Sure, move from one Big Tech monopolist to the next...

that's fair. I was thinking more of an easy way to use a custom domain for email.