Reference / Glossary / Targeting and data
Suppression List
A list of people to exclude from a campaign: existing customers, recent purchasers, employees, people who opted out. Suppression is the cheapest efficiency gain in most accounts and a legal requirement where opt-outs are involved.
Related terms
Used in The Signal
Cite this entry:
Agency Echelon. "Suppression List." Agency Echelon Reference, reviewed September 2026. https://agencyechelon.com/reference/glossary/suppression-list/