Sales Email A/B Test Calculator
Enter the number of emails sent and replies (or opens, clicks) for each variant. The calculator tells you whether the difference is statistically significant.
Variant A vs Variant B
A
B
Runs entirely in your browser. No data is uploaded.
Runs entirely in your browser. No data is uploaded.
How it works
STEP 1
Enter variant A data
Type the number of emails sent and the number of positive responses (replies, opens, clicks) for variant A.
STEP 2
Enter variant B data
Do the same for variant B — the challenger subject line or copy you want to compare against A.
STEP 3
Read the result
The calculator shows each conversion rate, the lift, a p-value, and whether the result is statistically significant at 95% confidence.