The gmail connection is a good (albeit belated) start, but it only appears to work from invoices.  The most relevant place for our business would be having the option to send a quote from our gmail domain. Why is this only available for an invoice and not for a quote?

It is also an incredibly poor limitation to have one email address per company, surely this should at very least be one email per user. I continue to have issues where emails from Quickbooks have ended up in someone's spam folder - a situation that wouldn't occur if the email was sent from our domain.

I would implore Quickbooks to resolve this situation promptly.  The inability to send from our own domain is a major shortfall for an allegedly advanced cloud platform.