It's not that the big players make it difficult for you to send/receive from "your own domain". It's more the underlying provider infrastructure. If you pick ba

It's not that the big players make it difficult for you to send/receive from "your own domain". It's more the underlying provider infrastructure. If you pick basically any mail provider, it'll work out just fine also with your own domain. And yes, even if you were to completely run your own mail stack it works okay if you follow all the best practices.