With instant checkout most of the orders I receive are paid before I am even
aware of them, although I still get a confirmation email from both Bricklink
and Paypal.
I would be useful for Bricklink to have an option to only send the email notification
if there is an order that requires a manual invoice (or requesting a quote obviously).
That way I know there is something I need to do. Otherwise it might be several
hours before I check the orders page and realize an invoice needs to be sent.