Pointless. Your selfhosted e-mail will just end up in spam-filters anyway.
Sadly email federation is on its last breath and you are better off using an external service somewhere if you want your email to actually reach anyone.
Edit: it’s not much better on VPS you can rent either.
Edit: and in before the person that claims they have been self-hosting email for 20 years already… yes exactly! That is why yours still works.