On the Sales - Invoices screen, is there a way to filter the results such that I ONLY see Invoices that have not yet been viewed by the Customer? Or elsewhere?

I need a quick view that shows me all Invoices that have not been viewed by the customer. Often our Invoices get picked up by the customer's Spam filter, or have been sent to an address that they don't check frequently, so we need a quick way to make a short list of which customers we need to reach out to by phone so that we can get paid.

Also, I am aware that you can view those details on the individual Invoice History, but we send out hundreds of Invoices and I need to not have to click through them each individually to view this information. Also, sometimes the Status column still says "Sent" when the invoice has also been Viewed (so that status should say "Viewed"), so that piece of data is not helpful because the system is not showing accurate, up-to-date Status info.