Marketing

Email Marketing ROI Calculator

Email Marketing ROI calculator: calculate projected revenue, ROI, cost per acquisition, and break-even conversion rate for your email marketing campaigns.

Result

ROI

111%

Projected revenue

$1,056

Profit

$556

Cost per acquisition

$37.88

Revenue per subscriber

$0.11

Opens

2,200

Clicks

264

Conversions

13.2

Break-even conversion rate: 2.37% of clicks must buy to cover the $500 campaign cost.

50 subscribers unsubscribe, leaving 9,950. At this campaign's revenue per subscriber, they take about $5.28 out of every future send like this one.

Revenue vs campaign cost

Projected revenue, cost, and profit per campaign.

Revenue

$1,056

Campaign Cost

$500

Profit

$556

General business information, not legal, tax or financial advice. The result comes only from your inputs and the published method. How we check our numbers.

How to use it

Enter your email list size, open rate, click-through rate of opens, conversion rate of clicks, average order value, total campaign cost (including design and tool fees), and expected unsubscribe rate.
Read projected revenue, ROI, profit, cost per acquisition, revenue per subscriber, and break-even conversion rate. The break-even conversion rate tells you the minimum click-to-purchase rate needed to cover costs.
Interpret the revenue vs cost chart to see if the campaign is structurally profitable or marginal. If CPA exceeds AOV, the campaign is loss-making at current rates regardless of volume.
Act on the output by fixing the weakest funnel stage first. A low open rate is a subject-line and deliverability problem. Low CTR is a copy or offer problem. Low conversion rate is a landing page or checkout problem.
Re-run before each campaign with updated list health metrics. Track revenue per subscriber over time — a declining RPS is an early signal that list quality is degrading or the offer is fatiguing the audience.

Questions people usually ask

What is email marketing ROI?

Email marketing ROI is the net profit from a campaign divided by the total campaign cost, expressed as a percentage. Widely repeated industry figures put it at $36 or more per $1 spent, but those come from marketers' self-reported surveys rather than measured campaigns, so measure your own: attributed revenue minus the cost of the platform, the list and the time spent writing.

What are good open and click-through rates?

Benchmarks vary widely by industry and by which vendor publishes them, and open rates have been inflated since Apple's Mail Privacy Protection (2021) started loading emails automatically, so treat opens as a rough signal and compare clicks with your own history. This tool takes clicks as a share of opens (click-to-open): a 2.5% click rate at a 22% open rate is about 11% of opens.

How is break-even conversion rate calculated?

Break-even conversion rate = (Campaign Cost ÷ Average Order Value) ÷ Total Clicks × 100. It tells you the minimum percentage of people who click that must purchase to cover your campaign costs.

What is cost per acquisition in email marketing?

CPA = Campaign Cost ÷ Total Conversions. It measures how much you spent to generate each sale or lead. Compare this to your product margin and customer LTV to determine if the campaign is profitable at scale.

Is this tool free and private?

Yes. AI Biz Hub tools run entirely in your browser with no signup required. Inputs stay local unless you share the URL.

Is this professional advice?

No. Outputs are planning estimates only. Real campaign results depend on list health, deliverability, and offer quality.

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Use it from code

The same calculation as a JavaScript module you can import. It runs where you import it, with no request, key or rate limit.

import { compute } from "https://aibizhub.io/engines/email-marketing-roi-calculator.js";

Input and output contract, TypeScript types and the guide for agents.