I believe we have a miscommunication, that’s alright let me clarify.

Simplified Privacy is technical support.  We don’t run the VPS.
We setup for you/customers services you like on a third party VPS that you pick, with your domain choice.

So we aren’t hosting the email, we’re providing the software and technical support.
The challenge is getting 3 services, with different web panels, to all work without issue.
So once we set it up, you lock US, meaning Simplified Privacy out.