@AndyNicolaides Is that somehow related to HEY? I have to be completely honest. The current squabbles about this service.... I don't know what's going on. In any case, it's nonsense. I liked the service but it was not a 100% fit. And the thing with the own domain. HEY didn't solve that perfectly either. But...
I am back to my default client. I have one inbox, many folders, many filters. Everything is well sorted and never lost. With HEY nothing was sorted at all. The IMBOX exploded. Still, I miss HEY. It was so fresh, just something different. I was really looking forward to seeing it. Looking at emails now is so... meh.
But well, I'll stay with this stand. E-mail classic. I follow HEY on various channels and see what is still happening. And maybe they will meet all my criteria at some point. Or at least to a degree that I'm happy enough with them. And just one @hey address? Guys, don't get so stressed out. Then if need be, change your address on the services at some point and let your friends know it's changed. Recently, many people have said: I'm now on Threema or Signal, not Whatsapp. What's the problem? I don't see online services as life services. Everything is transient.
In this sense, if you're happy with iCloud, stick with it.