Yes, I agree this is a huge problem for us as well.  We used to receive acknowledgement emails from our clients automated systems whenever we send them an invoice from QB. At one point we stopped receiving these emails and, it's due to this change that intuit made. 

Can you please fix this or provide an alternative? Lot of our large clients use automatic replies to acknowledge they've received invoice from us and, now those emails are not being sent to us...Can you guys atleast forward those emails or implement a better solution and not break an existing feature which was working?