Is there anything we can do on our ends? Like some kind of account setting to manually whitelist anything from your domain?

I don't use GMail, so don't know what you should tweak, but my understanding (I'm on a mail-manager's list where the GMail representative often explains how to sort this sort of thing out, as well as how not to get here in the first place) is that this *is* the best way to get gmail to like DW emails again.

If email from DW gets into your spam folder do tell Gmail that it got it wrong; the GMail artificial intelligence will learn that DW mail *is* wanted, then as more people say that they want DW mail their reputation will be restored.