The article mentions running separate servers to be able to claim your own domain. However, in AT I believe you can simply add a TXT record. There is no need to

The article mentions running separate servers to be able to claim your own domain. However, in AT I believe you can simply add a TXT record. There is no need to run a server unless you want to. Also, you can be @example.com if you want. You don’t need to be a user on a server like @me@example.com.