That's a great question! At this time we do not offer a tool that can pull this information from your account. We have seen customers export both the sent report on one of their campaigns and their current active list for to compare in Excel. The only 30-day reporting we offer is our Growth Report feature. This tool lets you see the number of new contacts added in the last 30 days and where they are being added from. With that being said I have submitted your feedback on this kind of feature in your account. I can also see you have called in for assistance as well. Please let us know if there is anything else we can assist with in the meantime.