Glossary
Email analytics
Measuring what happens after you send: bounces, opens, clicks, conversions, unsubscribes and complaints.
ValidReach Team · Updated 2026-10-26
In practice
Opens are the least reliable number, since some mail apps load images in advance and record an open the reader never made. Clicks, conversions and bounces are firmer.
Verification and sending
Bounces are the metric verification affects directly. A falling hard bounce rate after cleaning a list shows it working.