Ask HN: I got the .com for my surname, best way to share this with family?

I have a relatively uncommon surname, and I was eventually able to get the surname.com

At this time, I have the most basic G Suite account using the domain name, so I can have myfirst@lastname.com, although I am not tied down to this. I just did it because after playing with proton, fastmail, and others, gmail was the most reliable email.

If I want to share the opportunity to have firstname@lastname.com with my family members, with whom I am not close at all, what is the best way to accomplish this?

^ That is the main question, don't get distracted by the rest of my post below.

I could manually accomplish this a few different ways, but is there anything out there which would enable this with the least amount of legal and customer support liability?

I don't want to host email. I was thinking just incoming forwards would be easiest, but would love to hear any other thoughts on the matter. Ideally, incoming and outgoing would be supported, though I know Send As is up to the email host.

Something like https://home.omg.lol/ but only for email aliases? I would manually approve each application, but the mechanics would be automated. Is there FOSS anywhere close to this?

Sorry if this question is a mess. Thanks in advance for any advice.