This example is illustrative rather than a named case study — it walks through a setup that's typical of a mid-sized apparel store, to show how two features that both send email end up working together instead of stepping on each other.
The starting problem
The store had two kinds of quiet loss. The first was ordinary cart abandonment — shoppers adding items and leaving before checkout, for reasons that had nothing to do with the product. The second was slower: repeat customers who used to order every six or seven weeks, tapering off without ever formally churning. Nothing about either group showed up as a single alarming number; they just showed up as revenue that didn't arrive.
Setting up cart recovery
The store set the first recovery email to go out about an hour after abandonment, a middle ground between too eager and too late. A second nudge followed the next day, and a third — the last one allowed — three days after that. Each email rebuilt the cart exactly as it was left, same items and quantities, one click back to checkout. All three sent from the store's own address, using its own header and footer, so nothing about the email looked outsourced.
Layering in win-back, without overlap
Retention scoring runs on a completely different signal — a repeat customer's own ordering rhythm, not a single abandoned cart — so the two features naturally don't compete for the same moment. The store set a minimum of two past orders and a minimum lifetime spend before a customer became eligible for a win-back offer, which kept the emails away from one-time bargain hunters and focused them on customers with an actual pattern to be overdue against.
A cooldown rule meant nobody could receive a win-back email twice in a row, and anyone who ordered again after being scored dropped out of the list automatically before the next send — so a customer who came back on their own never received an unnecessary offer.
What moved
Both funnels are visible end to end: sent, opened, clicked, recovered, converted for cart emails; scored, emailed, returned, converted for win-back. Reading the two funnels side by side made it clear they were solving different problems — cart recovery brought back a purchase within days, while win-back brought back a customer relationship measured in months. Neither replaced the other, and running them at the same time didn't flood the same shopper's inbox, because the two lists rarely overlapped on any given day.