Email Metrics Calculator Formula:-

Delivery Rate: Delivery Rate = (Emails Delivered / Emails Sent) × 100
Bounce Rate: Bounce Rate = (Bounced Emails / Emails Sent) × 100
Open Rate: Open Rate = (Emails Opened / Emails Delivered) × 100
Click-Through Rate (CTR): CTR = (Unique Clicks / Emails Delivered) × 100
Click-to-Open Rate (CTOR): CTOR = (Unique Clicks / Unique Opens) × 100
Spam Complaint Rate: Spam Complaint Rate = (Spam Complaints / Emails Delivered) × 100
Unsubscribe Rate: Unsubscribe Rate = (Unsubscribes / Emails Delivered) × 100
Engagement Rate: Engagement Rate = (Unique Opens + Unique Clicks / Emails Delivered) × 100
Inbox Placement Rate (IPR): IPR = (Emails in Inbox / Emails Delivered) × 100
Email ROI: ROI = (Revenue from Campaign – Cost of Campaign / Cost of Campaign) × 100
Hard Bounce Rate: Hard Bounce Rate = (Hard Bounces / Emails Sent) × 100
Soft Bounce Rate: Soft Bounce Rate = (Soft Bounces / Emails Sent) × 100
Effective Delivery Rate: Effective Delivery Rate = (Emails Delivered – (Spam Complaints + Unsubscribes) / Emails Sent) × 100
Read Rate: Read Rate = (Emails Read / Emails Delivered) × 100
Forward/Share Rate: Forward/Share Rate = (Emails Forwarded or Shared / Emails Delivered) × 100
List Growth Rate: List Growth Rate = (New Subscribers – Unsubscribes – Bounced Emails / Total Subscribers) × 100
Retention Rate: Retention Rate = (Active Subscribers / Total Subscribers) × 100
Email Engagement Index (EEI): EEI = (Open Rate Weight × Open Rate + Click Rate Weight × Click Rate + Reply Rate Weight × Reply Rate)
Revenue Per Email Sent (RPE): RPE = Total Revenue from Campaign / Emails Sent
Conversion Rate: Conversion Rate = (Conversions / Emails Delivered) × 100
Engagement Score: Engagement Score = (Opens + Clicks + Replies / Emails Delivered)
Spam Rate: Spam Rate = (Emails Marked as Spam / Emails Sent) × 100
Reactivation Rate: Reactivation Rate = (Reactivated Subscribers / Total Inactive Subscribers) × 100
Churn Rate: Churn Rate = (Unsubscribes + Complaints / Total Subscribers) × 100
Average Revenue Per Subscriber (ARPS): ARPS = Total Revenue / Total Subscribers
Engagement Drop-off Rate: Engagement Drop-off Rate = (Unsubscribes + Inactive Users / Total Subscribers) × 100
Reply Rate: Reply Rate = (Replies / Emails Delivered) × 100