CAC Calculator
Sales + marketing spend in a slice ÷ newly acquired customers counted the same window.
Open calculator →Email Marketing ROI Calculator
Estimated ROI comparing email-attributed revenue with the cost of running email marketing.
Overview
Use this when you need one ROI figure for a defined period. It is not meant to prove that email caused every sale. Enter every recurring cost that would disappear if you shut the program off: ESP, freelancers, hourly staff time.
When to use this calculator
- Before you decide whether email is worth the tooling and labor you are paying for
- When finance wants one number that covers both email cost and attributed revenue
- When you reuse the same attribution window as your ESP or CRM reports
- When ROI looks high but you want to check that cost includes the real overhead
Rule of thumb
Positive ROI here only means attributed revenue exceeded the cost you summed in your window. It is not meant to prove that email caused every sale.
Terms used in this calculator
- ROI
- Return compared to everything you counted as investment—often wider than ads alone when people say "full ROI."
Calculator
Email marketing ROI
300.00%
Results are simplified estimates for educational purposes only and should not be treated as financial, accounting, legal, or tax advice. See our disclaimer for details.
Formula
(Revenue attributed to email minus email cost) divided by email cost, shown as percent. Keeps whichever revenue window your team trusts.
Example calculation
Using the default example values from the JSON seed for this tool:
- Attributed revenue
- 12000
- Email marketing cost
- 3000
Result: 300.00% (Email marketing ROI)
How to interpret this result
Estimated ROI comparing email-attributed revenue with the cost of running email marketing for the same window (tools, staff, freelancers, ESP).
Positive ROI only means attributed revenue exceeded the cost you summed. It is not meant to prove that email caused every sale.
Align the revenue window with the campaign or journey you are judging.
Common mistakes
- Omitting labor or tooling that materially affects true cost.
- Attributing revenue that would have closed without email.
- Mixing different fiscal windows for cost and attributed revenue.
What to do next
If ROI swings, rerun list value or revenue-per-send calculators with sober costs.
How to improve this result
- Load true costs: ESP seats, designers, copy help, and campaign management time.
- Match revenue to the same calendar window you paid for—especially around launches.
- Tag campaigns that exist only for activation so you do not credit every sale to every email.
Recommended tools
- Baremetrics SaaS metrics and subscription analytics dashboards.
- ChartMogul Subscription analytics for revenue, churn, and cohort reporting.
- ConvertKit Creator-focused email marketing and audience growth tools.
- MailerLite Email marketing for newsletters, automations, and simple landing pages.
FAQ
- What belongs in revenue?
- Attributed sales or pipeline value per your attribution rules—not total company revenue unless that is intentional.
- What belongs in cost?
- Tools, templating, ops time, incentives. Skip unrelated overhead unless it truly scales with sends.
- Can ROI be hugely positive yet misleading?
- Yes—over-attribution counts sales that email only nudged, or mismatched time windows inflate ROI.
- How is this different from list value calculators?
- ROI needs both revenue and cost for the period; list value calculators focus on monetization throughput per subscriber.
- Negative ROI—is the channel dead?
- Not always. Retention journeys may lag revenue; widen the attribution window thoughtfully before pulling plugs.
Related calculators
Newsletter Revenue Calculator
Rough dollars per broadcast from subscribers, opens, clicks among openers, and dollars per outbound click.
Open calculator →ROAS Calculator
Attributed revenue ÷ ad spend for the attribution window your team adopts.
Open calculator →Affiliate disclosure
Disclosure: Some links on this page may be affiliate links. If you sign up or make a purchase through these links, FounderCalc may earn a commission at no extra cost to you. We only recommend tools that are relevant to the calculator topic.