We noticed recently when unsubscribing from receiving emails from another Charity,  a warm and friendly message with a cute picture popped up inviting to continue being a friend by connecting through FaceBook, Twitter, etc.  It is nicer than the normal "you have been unsubscribed from further mailings" message.  I found out from our account manager that we do not have the ability to do something similar at the moment. Would be great if we could customize the un-subscribe screen.