Could people who do this talk a bit more about how the outgoing side works out? Is there a way to do this where I don't have to jump through hoops just to hit reply to a message & have it come from my custom domain?

Ideally, what I'm looking for:

* wildcard routing

* keep existing archive of mail

* easy to use (replies make sense on mobile and web interface)

* not have to replace google identity (for YouTube prefs + 3rd party sign-ins)

There was this discussion: https://news.ycombinator.com/item?id=30104783 about how a gsuite account could be converted to a free one, which sounds like it could work with this, but I'm still unsure about how sending mail would work out.

The next best alternative I see is fastmail, but that saves me just $12/year + I have to do a lengthy export + I'm not sure how my google accounts will work out.