I use it. It is useful for anyone who has a personal domain from which they'd like to send/receive without needing to migrate off Google entirely. My registrar

I use it. It is useful for anyone who has a personal domain from which they'd like to send/receive without needing to migrate off Google entirely. My registrar gives a few email addresses with SMTP support. Then I use GMail's send-as to remain in gmail but still use my name@mydomain.com mailbox.