Recover Cart Sales allows you to send individual or bulk emails to customers whom have set up an account and added products  to their shopping cart, but abandoned the cart prior to checking out.

RCS also gives you a report listing the customer who followed up with a purchase from your store based on your email to them. The email sent to these customers is very professionally written.

Works with 1.3.8, 1.3.9, 1.5.0, 1.5.1, 1.5.3