I can confirm what this poster said about their business emails not actually getting shared around, but that spam just all goes to gmail... I did a very similar

I can confirm what this poster said about their business emails not actually getting shared around, but that spam just all goes to gmail... I did a very similar setup and got similar results, but I'm using FastMail, though I'm sure protonmail and mailbox.org would work for this, had I chosen them as well.