Click on the Highly Interactive snapshot on your dashboard (1) to see the most active contacts currently in your database, shown in descending order of the last interaction. These contacts have been interacting with your emails by clicking on lots of properties within a recent timeframe.
The contacts in this list should already be known to you, given they are this active. However if you’re not in recent contact, make sure to touch base with them, as they are actively "in real estate mode".
Click on any contact name in the list to see their full Contact Profile, providing a better picture of whether the contact is looking to buy, sell or perhaps invest.