Airbnb and Amazon using search intent to trigger smarter emails

Airbnb & Amazon know about the importance of recovering abandoned shopping carts or even getting your attention back again to something that you were looking for in their sites. Both will trigger emails hours / days later after you have searched something while been logged in their sites in order to get the final sale from you. If this is something you could benefit of in your online business, you could set up something with ActiveCampaign ­ wrote a few months ago how to set something similar with site tracking + automatic email marketing.