Using a Suppression List

A suppression list is a list of subscribers in Email Studio that you don't want to receive your communications. Suppression lists filter out subscriber keys and prevent those keys from receiving your messages.

Suppression lists serve as a do-not-contact list for your email sends.

Review these examples of subscriber key types included on a suppression list:

• Keys with a history of spam complaints
• Unsubscribe lists from previous providers or advertisers
• Keys of your competitors
• Canceled customers

Suppression lists differ from exclusion lists, although the filtering logic at send time is the same. Exclusion lists are subscribers who have a status of active, bounced, held, or unsubscribed and who want to continue receiving messages. You select an exclusion list at the time of send. For example, you send a newsletter to List A but later realize you want to send it to List B. Some of the subscribers on List A also exist on List B and you don't want to send them the same email twice. When you send to List B, you select List A as an exclusion list.