This document discusses best practices for cart abandonment emails. It finds that 87% of consumers abandon carts but 75% say they will return to complete purchases. Testing timing of emails and discounts is recommended as immediate and 1-3 day emails saw lift in open rates up to 57% and click-through rates up to 54%. Cart abandonment emails can generate 10.4% of total email revenue from only 2.7% of email volume, showing they have high returns for low volumes. The document provides various email examples and recommendations on personalizing messages for different customer types.