(888) 310-0589 x2
The segments would be set up as inclusive and exclusive when it comes to the messages that have been seen. For example, show message 3 to anyone who has seen Campaign 2, but has not seen Campaign 3 (unless they have dismissed message 1 or 2).
This is a long term play, but we could measure how many people who saw the message do see the second message, showing that they are on the right path.
This would be a series of messages taking the customer through a journey on the site. There would be a series of segments which, based on whether the customer has seen the first message, would present the second message if they return within a specific time frame.