Free tool
Email Open Rate Calculator
Enter your sends and opens to get your open rate instantly. Switch to Advanced to separate delivered from sent and split unique vs total opens — the way ESPs actually report it.
How it works
- 1Enter emails sent and opens (Basic), or add delivered and unique opens (Advanced).
- 2We calculate your open rate against the numbers that matter.
- 3Compare it to the ~20–25% benchmark and see where you stand.
Questions
Frequently asked
Should I use sent or delivered as the denominator?
Delivered is more honest — open rate on delivered strips out bounces. Use Advanced mode to enter delivered (or bounces) and we'll compute both.
What's a good open rate?
It varies by industry, but 20–25% is a common benchmark. A clean, verified list is the single biggest lever — fewer bounces means a higher delivered rate to open from.
Can I check a whole list at once?
This free tool checks one at a time. To verify a full list — email, phone and company together — upload a CSV to BounceBlock and preview your first 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.
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