Please use a personal email. My email is ‘mail’ @ ‘my actual name’. It does not get more personal than that
But you can’t use emails starting with mail@, admin@, support@, info@, main@, etc.
Instead they advised me (3 times) to create a personal email on a service like Yahoo, Outlook, Gmail, Orange, etc
Who said it’s self hosted? For what we know he could be paying $200 a year to Microsoft for his personal mail@domain account under the most expensive office365 plan (sorry, did it change name? What’s called now? Microsoft 365?)
Frustratingly, those are actually two separate plans.