I’ve been testing and experimenting with ZOË, billed as ~ “Google for your email” at home and at work.
I’m excited. It seems to be intended as more of a proxy for your email. That is, it doesn’t necessarily replace your email client. You would like check the same mailbox(es) with both it and your mail client and use it for an SMTP relay for your sent mail so they get indexed too.
That’s already great. And I’m not complaining. But I was rather hoping it would replace my mail client. Maybe it will surprise me.