On stores I manage, cart recovery accounts for 8-15% of revenue. Best ROI feature in e-commerce.
Email 1 — H+1
Subject "Forgot something?". Service tone. Product photos. Direct cart button. No discount.
Email 2 — H+24
Subject "Still interested?". Customer reviews. Reassurance. No discount yet.
Email 3 — H+72
Subject "One last thing…". 10% off valid 48h.