Systems, methods and tools for modifying existing geofence notifications using a plurality of overlapping geofences and geo-fencing rules to alter the notification messages as a function of triggering multiple overlapped geofences simultaneously. Triggering the two overlapping geofences may display notifications tied to a special event, marketing campaign or promotion designated by the subsequent geofence overlaying a pre-existing, first geofence. While the second geofence is active, a modified message may be displayed featuring the special event or marketing campaign. Subsequently, after the second geofence has changed locations, deactivated or deleted, the previously existing geofence may revert back to the originally displayed notification prior to mapping the second geofence targeting the special event or promotion.