Glossary

Email engagement

How recipients respond to your messages: replying, clicking, opening and forwarding.

ValidReach Team · Updated 2026-10-26

In practice

Mailbox providers use engagement as a signal when deciding where to place mail, so a long list of people who never respond can hurt delivery. A common remedy is a sunset policy that stops mailing people after a long period of inactivity.

Verification and sending

An inactive address is not the same as an invalid one. Verification finds addresses that cannot receive mail; engagement shows who does not read it.