NPSNet Promoter Score
NPS measures customer loyalty by asking how likely customers are to recommend your brand on a 0–10 scale. It is one of the strongest leading indicators of customer retention and word-of-mouth growth.
What is NPS?
Net Promoter Score is calculated from a single survey question: 'How likely are you to recommend [Brand] to a friend or colleague?' on a 0–10 scale. Respondents are classified as Promoters (9–10), Passives (7–8), or Detractors (0–6). NPS = % Promoters − % Detractors. Scores range from -100 to +100.
An NPS above 50 is excellent; above 70 is world-class (Apple scores ~72; Amazon ~62). Most ecommerce brands land between 20–50. The score itself matters less than the trend — a brand improving NPS from 28 to 41 over 12 months is building a stronger customer base regardless of the absolute number.
For ecommerce brands, NPS is valuable because it predicts retention. Promoters buy again at 2–4× the rate of Passives, generate referrals (free acquisition), and leave positive reviews. Detractors buy less frequently, are more likely to return products, and are the primary source of negative reviews. Improving NPS directly improves LTV and lowers effective CAC.
Why it matters for sellers
Every percentage point shift in Promoters vs. Detractors has compounding downstream effects on revenue. A brand with 60% Promoters generates organic referrals equivalent to 20–30% of their paid acquisition volume — effectively lowering blended CAC by that proportion. A brand with 30% Detractors is likely bleeding reviews, return rates, and repurchase rate simultaneously.
How to use NPS
Send NPS surveys via Klaviyo or a dedicated tool (Delighted, Medallia) 14–21 days after first delivery — enough time for the customer to have used the product but recent enough to remember the experience. For high-frequency buyers, survey after every 3rd purchase rather than every transaction.
Analyse NPS by acquisition channel and product. If NPS for customers acquired via influencer marketing is 67 but Meta-acquired customers score 31, the influencer audience is a better fit for your product. This insight should shift acquisition budget allocation significantly.
Real-world example
A supplement brand sends NPS surveys to all customers at day 21 post-delivery. Overall NPS is 38. Segmenting by product reveals their whey protein scores 61 but their pre-workout scores 14. Investigation finds the pre-workout formulation complaints centre on taste. They reformulate, relaunch, and NPS for pre-workout rises to 49 over 6 months. Return rate on pre-workout drops from 12% to 3%.
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Frequently asked questions about NPS
What is a good NPS score for ecommerce?
50+ is considered excellent for consumer products. The industry average for ecommerce hovers around 45. Focus on your score relative to your historical trend and category peers rather than absolute benchmarks — consistent improvement quarter over quarter is what matters.
How do I collect NPS for Amazon customers?
You cannot directly survey Amazon customers via email (Amazon owns the relationship). Use Amazon's 'Request a Review' button or the automated review request in Seller Central. For NPS measurement on Amazon customers, use Brand Analytics data (star rating trends, review sentiment) as a proxy.
How often should I measure NPS?
Survey customers 14–21 days post-delivery for post-purchase NPS. Run a broader relationship NPS survey to your full list quarterly. Avoid surveying the same customer more than twice per year — survey fatigue produces lower response rates and less accurate data.