Email Marketing KPI Calculators

Most email KPI tools either lock you behind a signup or bury the math under a sales pitch. These don't. Each calculator below runs the formula instantly — no account, no email required. Every one ships with the 2026 industry benchmarks so you can see whether your number is healthy, mediocre, or quietly bleeding revenue.

Browse all calculators How these work

Free, no signup
Instant results
2026 benchmarks
Formulas explained

All calculators

Pick one to start — or stack a few.

How these calculators work

Three steps, under thirty seconds. No account required for any of them.

01
Pick the metric you need
CTOR, unsubscribe rate, spam complaints, list growth — each tool is built around one specific email KPI.
02
Plug in your numbers
No signup, no email gate. Type your delivered count, opens, clicks, or complaints into the form and watch the result update live.
03
Read your benchmark band
Every result is tagged against 2026 industry benchmarks — Excellent, Healthy, Caution, Danger — so you instantly know whether your number is good, average, or quietly losing you money.

Pro tip: deliverability problems usually show up in three calculators before they show up in your dashboard. If your unsubscribe rate climbs and your spam complaint rate ticks up, your sender reputation is already moving — don't wait for the inbox-placement number to fall.

Knowing your number is one thing. Improving it is another.

Reverse Lookup turns the emails on your list into verified person + company profiles — cleaner data, better targeting, and a healthier number on your next calculation.

Start free with 15 credits Or see all pricing plans

15 free credits, no card
Bulk CSV / XLSX upload
Native Google Sheets add-on
GDPR & CCPA compliant