For yourself as an experiment sure, but don't fuck around with your family's email.

100%. Fuck this shit of doing it at home. I want a set it and forget it solution and go outside.

It stops becoming a "homelab" when it's impacting your family.

My entire "homelab" is contained in one box- if something fails on it, no one cares- it won't impact anyone. My home network consists of a simple mesh network.

This is something I don't think a lot of people consider. If you're the one that set this up, and you expire tomorrow, do you really want the burden of figuring this out on your spouse/partner/kids???