Affiliates want to know how many leads they sent you so they can see their conversion rates and have transparency about what happened with their list once they opted into your offer. The system already tracks the lead when you drill down into the lead and activity because it shows who referred them. All you would have to do is enable the ability to run a report that compiles a list of contacts referencing the affiliate that referred them. It would be great to put this number and list in their affiliate center but for us, just having the ability to run a report to see the numbers is a great start. Thanks