The best way to connect with a customer is through transactional emails? You have the attention of the customer as they expect and await confirmation emails, billing statements, etc. You have instantaneous behavioral information about the customer since they just took an action to produce this confirmation email or purchased something from you.
With Campaign Intelligence you can now easily transform your transactional messages into relevant email the consumer can further act on and provide offers that are highly relevant and upsells. This strategy is currently in use by most major online retailers web sites in the form of, "People who bought this also bought"
Cross sell offers based on items in order
Include Relevant information based on items in order