List growth rate measures how quickly an email list is expanding over a given period, calculated net of unsubscribes and bounces rather than counting only new signups.
Why "Net" Is the Word That Matters Most
This number is easy to get wrong if only new signups are counted. A list adding 500 new subscribers a month while losing 400 to unsubscribes and bounces isn’t really growing by 500, it’s growing by 100. This is exactly what list growth rate is meant to capture correctly. Most sources agree that unsubscribes and inactivity typically erode 20 to 30 percent of a list annually, which means gross signups alone paint a badly inflated picture of actual growth.
The Formula
List Growth Rate = ((New Subscribers − Unsubscribes − Bounces) ÷ Total Subscribers at Start) × 100
The list growth rate formula this way produces a genuinely honest number, one that accounts for the leak happening on the other side of every new signup. This is the version worth using whenever someone asks what is list growth rate for a specific store, rather than the simpler, more flattering gross-signup count.
What Benchmarks Actually Say, Honestly
List growth rate benchmark figures vary considerably across sources, which is worth acknowledging directly rather than presenting one number as universal:
- 1 to 3 percent monthly for a mature, organically-growing ecommerce list.
- 2 to 5 percent monthly (25 to 35 percent annually) cited as a general healthy range across industries.
- 8 to 15 percent monthly net of churn as a 2026 Klaviyo benchmark specifically for actively-growing ecommerce brands.
- 11 to 25 percent annually in a broader ecommerce-specific study, varying by region and acquisition investment.
The spread exists because these figures measure different populations, mature versus actively-scaling stores, and use different methodologies, some net of churn, some not. The more useful exercise for any individual store is tracking its own rate over time rather than chasing an external number pulled from a different kind of business entirely.
How to Improve List Growth Rate Without Just Adding More Forms
How to improve list growth rate sustainably means addressing both sides of the formula, not just the acquisition side: reducing churn through relevant content and reasonable frequency matters as much as adding new signup opportunities, since a store aggressively adding subscribers while ignoring rising unsubscribes is treating a symptom rather than the underlying leak.
Related terms:
Adflipr’s analytics dashboard tracks list growth net of unsubscribes and bounces, giving an accurate picture of whether a list is genuinely expanding.
