Skip to content
Allin
Sign up · Sign in

Email list growth rate calculator

Compute the net growth rate of your email list from new subscribers and unsubscribes.

Related tools

All Email tools →
Email open rate calculatorCompute the open rate of an email campaign from opens and delivered emails.Email marketing ROI calculatorWalk a campaign from emails sent through delivery, opens, clicks and orders to revenue, then to margin, ROI and ROAS. Each rate stacks on the previous step, so you see exactly where the funnel leaks — plus revenue per email, cost per order and the break-even conversion rate.Click-to-open rate (CTOR) calculatorCompute the email click-to-open rate from unique clicks and unique opens.Email signatureCreate a clean email signature with a live preview.Email templateBuild a simple HTML email with a live preview.Bounce rate calculatorCompute your website's bounce rate from single-page sessions and total sessions.Lead-to-customer rate calculatorCompute what share of your leads become paying customers.Cart abandonment rate calculatorCompute your shopping cart abandonment rate from carts created and completed.

Enter New subscribers, Unsubscribes, Total subscribers and the Email list growth rate calculator works out Net growth rate straight away. For instance, with New subscribers = 500, Unsubscribes = 100 and Total subscribers = 5,000 it returns Net growth rate = 8%.

How to use it

  1. Enter your values: New subscribers, Unsubscribes, Total subscribers.
  2. Read the result instantly: Net growth rate.

Frequently asked questions

How does the Email list growth rate calculator work?

It takes New subscribers, Unsubscribes and Total subscribers and derives Net growth rate from them. The calculation is live as you type, so the result updates on every change.

Which values does the calculator ask for?

3 values: New subscribers, Unsubscribes and Total subscribers. Nothing else is required — no account, no file upload.

What does a typical calculation look like?

With New subscribers = 500, Unsubscribes = 100 and Total subscribers = 5,000, the calculator returns Net growth rate = 8%. Those figures come from running this exact tool, so you can reproduce them by entering the same values.

When would I actually use this?

Reading a send properly: what the open and click rates mean once bounces are removed, how fast the list is decaying, and what volume a target reply count needs.

What is the most common mistake?

Treating the open rate as a measure of interest. Image-blocking and privacy proxies open messages nobody read, and inflate the figure by a margin that varies with the audience's mail client.

What is the difference between the Email list growth rate calculator and the Email open rate calculator?

This one returns Net growth rate; the Email open rate calculator returns Open rate. That is the whole difference — open the one whose figure you need.

Is there a tool for the next step?

Email marketing ROI calculator is the closest one after this: Walk a campaign from emails sent through delivery, opens, clicks and orders to revenue, then to margin, ROI and ROAS. Each rate stacks on the previous step, so you see exactly where the funnel leaks — plus revenue per email, cost per order and the break-even conversion rate.

What else is worth having open alongside it?

Click-to-open rate (CTOR) calculator and Email signature — they come up in the same task often enough to be worth a second tab.

Where do the figures come from, and how current are they?

The rates are computed from the figures you supply. Whether your platform divides by sends or by deliveries changes every percentage, so compare within one tool rather than across two.

Further reading

All guides →
ExplainerGrowing an Email List Is a Leaky BucketConstant additions against a proportional loss rate do not grow forever — they converge on a ceiling equal to additions divided by the loss rate. Here is that ceiling computed for six loss rates, why a list can grow while its engaged half shrinks, and the feedback loop that makes a bought list self-defeating.ExplainerThe Viral Coefficient, and Why K Above 1 Almost Never HappensK is invitations per user times the conversion rate of an invitation — two small numbers multiplied. Below 1 the loop is a finite multiplier worth 1/(1−K), and cycle time decides which loop actually wins.ExplainerEmail Open Rate Is Broken. Measure Click-to-Open InsteadApple Mail Privacy Protection pre-fetches tracking pixels, so a share of your opens were never opened by a person. Open rate now moves with your audience's mail client. Here is what survives, worked on a single send.ExplainerWhat an Email Programme Actually ReturnsThe famous email ROI multiples are self-reported survey figures with the labour left out of the denominator and revenue that would have arrived anyway left in the numerator. Build the honest version instead: incremental revenue against full cost, measured with a holdout — and the arithmetic of how big that holdout has to be.ExplainerOpen Rate Is a Measurement of Your Audience's Mail ClientThe denominator should be delivered, not sent — which means defining hard and soft bounces properly. Unique and total opens are different numbers. And a reported open rate has a computable null point: past a certain share of prefetching clients it carries no information about humans at all. The instrumentation that replaces it.GuideEngagement Rate Formulas by Platform: Why the Same Post Scores 2% and 4.8%Engagement rate is not one metric. Divide by followers, by reach or by impressions and the same post returns three different numbers — and every platform defaults to a different denominator.