---
schema_version: "1"
id: 57a4b65492e3647ddbaf3575ae0dd35f4dbc8d4df08675a6c244280551f9f5ee
title: Using a Suppression List
collection: admin
version: current
locale: en-us
portal_url: https://docs.salesforce.com/admin/current/en-us/mktg/264-0-0/mc_es_suppression_lists_in_your_send.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_es_suppression_lists_in_your_send.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: 4b80739254358bbe205a8ef1324557ed03c84b1b3d9ce9816a396df797e9a619
description: 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.
products:
  - Marketing
  - Marketing Cloud Engagement
release: "264"
---
# 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.

#### See Also

- [Enterprise 2.0 Shared Suppression Lists](https://help.salesforce.com/s/articleView?id=mktg.mc_es_shared_suppression_lists.htm&release=264.0.0&type=5 "Share suppression lists from parent business units to child business units in Email Studio.")
- [Auto-Suppression Lists](https://help.salesforce.com/s/articleView?id=mktg.mc_es_auto_suppresion_lists.htm&release=264.0.0&type=5 "Assign a suppression list for use across an entire Marketing Cloud Engagement tenant or for specific business units for specific send classifications. You can assign auto-suppression lists at different levels of your account. Suppression lists filter out email addresses and prevent those addresses from receiving Email Studio messages. Suppression lists serve as a do-not-contact list for your email sends. Auto-suppression lists typically include addresses with a history of spam complaints, unsubscribe lists from previous providers or advertisers, addresses of your competitors, and canceled customers.")