The Unsubscribe report only gives you the email address and a true/false statement but not when the person took that action. The information is captured at the individual contact level but doesn't feed into a larger report. Currently, you have to look at every contact, note down the unsubscribe date and maintain this manually yourself, which is not ideal. To take it a step further, it would be good if the report could also include the name/title of the communication that caused the person to take the unsubscribe action.
We need this functionality. Without it, we cannot truly tell how much a marketing list is growing...sure, we can see the list grow in size, but does it really grow if you had an equal amount of unsubscribes in the same time frame?