> The "de facto" solution is o outsource that to google.

So, they have a "de facto" monopoly, or at best, are working with other providers to create a cartel.

> Email on a personal machine and domain has been dead for over 10 years.

Due to the actions of?

> You can receive it, no problem. But you can't send it.

You can send it. They're actively deciding to just block you. Then provide you no recourse.

Sending requires quite a large volume for the big players to allow you to play. The only viable option for small servers is to use a SMTP relay service. Amazon's was a pain to get out of the sandbox mode but has been reliable and most importantly free.

As I care more about the recieving side than sending emails this works well enough for me.