// Glossary
List Hygiene
Regularly cleaning an email list by removing invalid, stale, and unengaged addresses to keep it healthy.
Definition
List hygiene is the ongoing maintenance of an email list: verifying addresses, removing hard bounces, suppressing unsubscribes and complaints, and pruning long-inactive contacts. Clean lists bounce less, draw fewer spam complaints, and protect sender reputation and deliverability. Because addresses decay as people change jobs and abandon inboxes, hygiene is recurring work, not a one-time cleanup. Continuous re-verification keeps a list reliable over time.