Metrics Articles Business Metrics Diagnostic Metrics Conversion Rate from Click Conversion Rate from Sent Return-on-Ad-Spend (ROAS) Return-on-Investment (ROI) Revenue-per-Email-Sent (RPE) Bounce Rate Click Reach Rate Click-through Rate (CTR) Click-to-Open Rate (CTOR) Deliverability Rate Delivery Rate Engagement Time Inbox Placement Rate Open Rate Open Reach Rate Read Rate (deliverability) Render Rate Spam Complaint Rate Unsubscribe Rate