Glossary
List fatigue
A list losing its responsiveness over time as people age out, lose interest or get too much mail.
ValidReach Team · Updated 2026-10-26
In practice
Open and click rates fall and unsubscribes rise. Respond with a re-permission message to long-inactive contacts and remove those who do not answer. Smaller, engaged lists deliver better than large tired ones.
Verification and sending
Check that a quiet segment is still reachable before a win-back send. Verification separates dead addresses from people who simply stopped responding.