The software that I use, and recommend, allows me to track customers around an entire website. I get to see which pages they’re visiting and what particular categories they have interest in. Each time they visit the site the customer is moved to the correct segment of the list based on assumed interest. This is extremely powerful as even without the subscriber explicitly telling us we’re able to understand what their interest is and what types of marketing they should be receiving. Imagine being able to create a sale for people who are only interested in product X and then next week being able to create a similar campaign and sending it only to people that are interested in product y There’d be no cross over, people in category X would never see the y campaign and vice versa. The power and flexibility that segmentation brings to your list is second to none. Being able to sell directly so someone’s interest is what makes the automated campaigns so effective.