Email marketing service provider Listrak has expanded its Geo Tracking capability by integrating the web-based mapping service application from Google Maps.

Geo tracking (in relation to email marketing) refers to the ability to plot email open, read, and click-through results on a visual map. The benefit of such data is that it offers a view of where the most active subscribers from your list are located around the world. Here's a video of the service in action at Listrak.