This is like Outlooks read-receipts, which I refuse to use or [immediately] acknowledge when someone attaches one. For those that want to be slightly evil, sav

This is like Outlooks read-receipts, which I refuse to use or [immediately] acknowledge when someone attaches one. For those that want to be slightly evil, save all these messages in your archived folder, and at the end of the year - select all, read all: and you'll hear screams from across the office from all the guilty parties that attach read receipts as they will get their inbox flooded from all of your confirmations.