I think this app is what you want. You can see how it works here
Sale Nuturing app of Beeketing platform: "For each time customers view a product, or add a product to cart, but haven’t bought it yet, Beeketing will automatically send an email providing more information about that product and persuading them to own it sooner. After 2 days, if your customers still hesitate to buy, we will send them another email to remind them, and after another 2 days, if customers still don’t buy your products, we’d continue to send them one last email to make sure they don’t forget your awesome deals"
Click to get Beeketing and you will be able to use Sale Nuturing. Unfortunately, Beeketing is not free but you can try FREE TRIAL for 30 days. Besides, this platform have great other apps. Just take a look.