Right now if a customer unsubscribes, they remove themselves from ALL communications. We want to offer an opportunity to remove themselves from types of campaigns that do not pertain to their interests. For example we are a retail store, we could let customers subscribe to different lists such as Women's, Men's, and/or Kids' and they should be able to unsubscribe to one or more of those campaign categories rather than unsubscribing to all emails. Or if they only want to hear about "Sales" and not about "Product or Brands".