Email metrics calculator

Enter the numbers from your email report to get every key rate, plus a quick health check.

Your numbers

Emails sent

Bounces

Unique opens

Unique clicks

Unsubscribes

Spam complaints (optional)

Conversions (optional)

Revenue (optional)

How it works

Delivered = sent − bounces
Open rate = opens ÷ delivered · Click rate = clicks ÷ delivered
Click-to-open rate = clicks ÷ opens

Apple Mail opens emails automatically for many users, which inflates open rates. Click rate is the more reliable measure of engagement.

Health-check thresholds are common rules of thumb: bounces under 2%, unsubscribes under 0.5%, and spam complaints under 0.3%, the limit Gmail and Yahoo set for bulk senders.