Customer retention by acquisition channel: why volume campaigns leak
The short answer
Check customer retention by acquisition channel against what each customer bought first and the discount on that order. Compare second-purchase rates for customers from your highest-volume campaigns with customers from other sources, split by first product and discount depth. Low retention often traces back to a deep first-order discount on a low-repeat product.
Why it matters
High-volume campaigns can fill the customer file with one-time buyers who cost as much to acquire as loyal ones. Finding the first-order pattern behind low retention lets you change the offer or product mix and stop paying for customers who never return.
The question to ask
Copy this into Lexi as written.
What the answer looks like
Illustrative output on sample data
Illustrative example: how Lexi answers this for a homewares retailer. It compares a year of new customers from two acquisition sources, by discount depth and six-month repeat rate.
- Flash sale on social: 9,400 new customers, 71% bought at 40% off or more, 11% bought again
- Search and email sign-up: 5,200 new customers, 18% on discount, 29% bought again
What the data shows
The flash sale brought in nearly twice as many customers and keeps well under half as many.
What it means
The first product matters as much as the discount. Flash sale customers who first bought bedding returned at 21%. Those whose first buy was a single clearance lamp returned at 4%.
What to do
Rerun the flash sale with bedding at the front and a shallower discount, and compare repeat rates after six months.
Would you like this cut by first product for every acquisition source?
Frequently asked questions
How do I measure customer acquisition quality?
Measure what new customers do after the first order. The clearest signals are the share who buy again within six months, their 12-month spend and the margin on that spend. Divide acquisition cost by the number of customers who return to get the cost of each customer worth having.
Do deep first-order discounts always hurt retention?
Not always. A discount on a product customers need to replace can start a habit. The damage comes from deep discounts on one-off items, which attract shoppers looking for a deal and give them no reason to return. Judge each offer by product, using repeat rates.
Should I stop running high-volume acquisition campaigns?
Rework them first. Change the lead product, trim the discount and test the new version against the old one on six-month repeat rate. Volume campaigns have value when they bring in customers who return. If no version lifts retention, move budget to sources that produce repeat buyers.