Last updated October 2026 by Lily Newman
Customer retention marketing is everything you do to get a first-time buyer to order again and keep ordering. For a DTC brand the measurable version is repeat purchase rate, and the first lever is the second order.
Why retention marketing deserves budget (and strategic focus)
Two figures get quoted constantly. Harvard Business Review reports that acquiring a new customer costs five to 25 times more than retaining one, depending on the study and industry, and attributes to Bain's Frederick Reichheld the finding that a 5% increase in retention can raise profits by 25% to 95% (HBR). Both are old and vary widely by business, so use them as directional. To get your own number, compare the contribution margin on a first order with the margin on a third order, after the cost of acquiring the first and the offers you used to get the others.
Start with the second order
Klaviyo's guidance is that, for most ecommerce brands, the chance of a second purchase falls off most sharply between 30 and 60 days after the first, and that many brands wait until 90 days to run a winback, which is too late (Klaviyo). Every brand is different, so treat that as a reason to check your own data, not a rule. Here’s how:
Pull the days between first and second order for customers who did reorder.
Find the median, and the point by which most reorders have happened.
Time your post-purchase series and replenishment reminder to land before that point, and your winback just after it. If you can make it dynamic based on the individual user or type of user, even better. But most ESP’s aren’t quite there yet.
A coffee brand and a home decor brand will get very different answers. That’s the point.
The retention toolkit
| Lever | Works best when | Watch for |
|---|---|---|
| Post-purchase series | Every product, from day one | Cramming in promotions before the customer has the product |
| Replenishment reminder | Consumables with a predictable use-up date | Timing it off the wrong date |
| Subscription | Repeat use is routine | Churn after the first few shipments |
| Loyalty program | Customers order often and margin can fund rewards | Rewarding orders that would have happened anyway |
| Winback | A clear lapsed definition based on your cycle | Discounting people who were about to return |
| Early access for top customers | You have a real top tier | Making it a discount in disguise |
What to measure
| Metric | How to calculate | What it tells you |
|---|---|---|
| Repeat purchase rate | Customers with two or more orders divided by all customers in the period | Whether first orders turn into habits |
| Time to second order | Median days between first and second order | When to time flows |
| Cohort retention | Share of each month's first-time buyers who order again, by month since first order | Whether it is getting better over time |
| Revenue per recipient | Revenue from a flow or campaign divided by recipients | Which messages earn their place |
| Customer lifetime value | Revenue or margin per customer over a fixed window | What you can afford to spend on acquisition |
There is no single “good” retention rate. It depends on the category and how often people need to buy. Compare your own cohorts over time, and compare yourself to the brands in your category only when the buying cycle matches.
Retention and lifecycle marketing
Retention is one part of lifecycle marketing. Lifecycle covers the whole path, including the first order. Retention begins once someone has bought and covers everything that happens next.
Four common mistakes
Discounting by default. Decide who gets an offer based on margin and likelihood to reorder, not out of habit.
Treating every repeat customer the same. A customer on their second order and one on their tenth need different messages.
Ignoring new customers while you chase old ones. The second order is the bridge, so keep investing there.
Tracking one blended retention rate. Cohorts show whether you are improving. A blended number hides it.
Frequently asked questions
What is customer retention marketing? It is marketing aimed at existing customers to earn repeat orders and long-term loyalty, usually through email, SMS, loyalty and subscription programs.
What is a good customer retention rate? It varies by category and purchase cycle. Compare cohorts of your own over time before comparing yourself to others.
What is the difference between retention and loyalty? Retention is the behavior: customers order again. Loyalty programs are one tactic for encouraging it.
How soon should I contact a customer after their first order? Immediately for the order confirmation and how-to content, then timed to your measured reorder window for the next promotion.
Is retention cheaper than acquisition? Usually, according to the research cited above, though the gap varies by business. Measure it with your own margins.
Want a retention program timed to your actual reorder cycle? Talk to Newly Marketing.
Sources
About the Author
Lily Newman is the Founder and Principal of Newly Marketing, a digital marketing consultancy specializing in lifecycle, email, mobile, CRM, and retention marketing. A fractional DTC e-commerce marketing leader, Lily advises high-growth startups and Fortune 500 brands in retail, CPG, health and wellness, and technology, drawing on 15+ years leading acquisition and retention for Levi's, Peet's Coffee, Mighty Leaf Tea, Four Sigmatic Foods, and more.
