Newsletter ROI Calculator
Calculate the real revenue potential of your email newsletter. Enter your list size, engagement, and offer economics — we'll show your monthly revenue, lifetime value per subscriber, and cost savings vs. other platforms.
Calculate Your Newsletter ROI
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About This Tool
Email newsletters are one of the highest-ROI channels in marketing — but only if you measure them correctly. This calculator works out your true monthly revenue potential based on subscriber engagement, conversion rates, and offer economics. Use it before and after switching platforms to see the compound effect.
What it does
- Estimates monthly revenue from your newsletter given list size, engagement, and AOV
- Calculates lifetime value per subscriber (LTV) using industry-standard churn assumptions
- Shows cost savings vs. Mailchimp, Beehiiv, Klaviyo, and ConvertKit at your subscriber count
- Projects the revenue impact of a 10%/20%/30% open-rate improvement
How to Use
Enter your list size
Total active subscribers on your newsletter (excluding bounced or unsubscribed).
Enter your engagement rates
Industry benchmarks: open rate ~28%, click-through rate ~2.5%. If you don't know yours, start with these.
Enter your conversion economics
Conversion rate = % of clickers who buy. AOV = average order value. For SaaS, use avg MRR × 12.
See your ROI
Monthly revenue, annualised, LTV per subscriber, and the uplift from an engagement improvement.
Methodology
Monthly revenue = subscribers × open_rate × CTR × conversion_rate × AOV. LTV assumes 60-month average subscriber lifespan (email is remarkably sticky — industry benchmark). Cost savings compare Aldus's flat pricing against published tiered pricing on competitor sites as of 2026.
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Frequently Asked Questions
What should I use for open rate if I don't know mine?
Start with 28% — the cross-industry median for B2B/consumer newsletters. Good newsletters hit 35-45%; great ones hit 50%+. Use your actual number if you have it.
How accurate is the LTV estimate?
LTV is a 5-year projection assuming current engagement continues. Real LTV varies 20-40% from the estimate based on churn patterns, upsells, and subscriber reactivation flows.
Why is my calculated ROI so much higher than my actual revenue?
Most newsletters under-monetise. The calculator shows potential assuming your best-performing issue's conversion rate applies to every send. Closing the gap between potential and actual is what great tools (like Aldus) do for you.