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Inboxwise Tools

Email Marketing ROI Calculator

Find out whether a campaign paid for itself — and how many orders you need to break even. Nothing you type leaves your browser.

Your campaign

All amounts in US dollars. Results update as you type.

One-off costs for this send: design, copywriting, freelancer time, images.

The share of your email software bill for this campaign (e.g. monthly plan ÷ campaigns per month).

Use delivered emails if you have that number.

Orders ÷ emails sent × 100. Not orders ÷ clicks.

Average revenue per order from this campaign.

If you already know how many orders the campaign drove, enter it to override the estimate.

Results

ROI

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Estimated conversions
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Revenue
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Total cost
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Profit
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Break-even conversions
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Break-even conversion rate
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Revenue per email
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Cost per conversion
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    How this calculator works

    The calculator uses the standard ROI formula:

    ROI (%) = (Revenue − Total cost) ÷ Total cost × 100
    • Total cost = campaign cost + platform cost.
    • Estimated conversions = emails sent × conversion rate. If you enter actual conversions, we use those instead.
    • Revenue = conversions × average order value.
    • Break-even conversions = total cost ÷ average order value, rounded up to a whole order.

    Assumptions to keep in mind

    • Revenue, not margin. The calculator uses order revenue. If your product costs money to make or ship, subtract those costs (or enter your average profit per order instead of AOV) for a truer picture.
    • Attribution is messy. Some buyers would have purchased anyway, and some buy days later on another device. Treat the result as an estimate, not an audit.
    • Your time counts. If you write the email yourself, consider adding the value of your hours to the campaign cost.
    • ROI is undefined at $0 cost. If you enter no costs, we show revenue and profit but leave ROI blank instead of showing an infinite number.

    A quick example

    You send 10,000 emails, 0.5% of them turn into an order (50 orders), and the average order is $40. That's $2,000 in revenue. With $250 in total cost, profit is $1,750 and ROI is 700%. You'd need just 7 orders to break even — a break-even conversion rate of 0.07%.

    Want the full walkthrough? Read How to Calculate Email Marketing ROI. To attribute revenue to a specific send, tag your links with the UTM Builder.

    FAQ

    Should I use emails sent or emails delivered?

    Delivered is more accurate because bounced emails can't convert. If your platform only shows "sent," that's fine — just be consistent from campaign to campaign.

    What's the difference between ROI and ROAS?

    ROAS is revenue ÷ cost (for example, 8×). ROI subtracts cost first, so the same campaign has an ROI of 700%. Both are useful; just don't mix them up when comparing channels.

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