Hi Woodfordjoinery, Welcome to the Community! In order for viewed to be ticked the person who receives the invoice has to click on view invoice, which then forwards to a link and brings up a pop-up of the invoice. If the person just looks at the email and the cost on the front it will not pick up as viewed. I hope this makes sense. Any Q's just reply back on this thread:smiling_face_with_smiling_eyes: