Can we have the ability to ask for read receipts when sending emails. I spend a great deal of time ringing people up who fail to respond just to ask if they have received the email.

We used to have email read receipts by default but it was removed after a client complained that they did not wish to be continually asked for them. Can we have the ability to switch read receipt requests on and off as we see fit. It was an exceptionally useful function and I have used receipts on many occasion to confirm that someone had received an email which they subsequently did not recall receiving.