Hello all, and thank you, @julezmbi, for the tag and reminder for an update. I'm in regular communication with the team working on this, and they are still doing all they can to improve email deliverability from QuickBooks and monitor this thread for new and updated information.

Although I can not share specific details on the process, it will continue to be an active and ongoing priority to make sure invoices, and other emails from QuickBooks are delivered reliably.