Indeed Smart PopUp
The most complete and best ever built Popup plugin! With more than 100 features, you can create so many types of popups. The Smart PopUp plugin has a key feature, the targeted audition. Don’t display the popup for everybody and anytime, be smart and pick your audience. Out of the “Load Page Popups” you can set the popups on exit page or when the user clicks on a button. Also, FaceBook and Google Maps popups are now available.