Email Open Rate Calculator
Calculate email open rate from delivered and opened emails. Measure campaign performance and compare outreach results with a clear percentage.
Leave delivered blank to use sent minus bounces.
Unique open rate · Average
26.7%
34.9%
Total open rate
97.5%
Delivery rate
2.5%
Bounce rate
Benchmark
Low<20%Average20-35%Strong35-50%Exceptional50%+
DiagnosisOpen rate is in a normal working range. Segment the audience and test subject lines to find incremental lift.
FormulaUnique open rate = Unique opens / Delivered emails x 100
Total open rate = Total opens / Delivered emails x 100
Delivery rate = Delivered emails / Sent emails x 100
Scrape hundreds of webpages in one click with the Thunderbit Chrome Extension. Prefer to hand this job to AI? Use the Thunderbit API or Thunderbit MCP. Want us to run it for you? Use our Web Scraping Service.
Scrape hundreds of webpages in one click with the Thunderbit Chrome Extension.
Install fromChrome Web Store
Discover More Free Tools
Measure Email Campaign Open RatesTrack how well your email outreach performs with a quick open rate check. Enter delivered and opened emails to see a clear percentage.
Install fromChrome Web Store
