---
schema_version: "1"
id: 5085059eea2d78f4f96481f590aa4c2114070c4c84a67054918b970838c0d6d0
title: Suppression Lists in Email Studio
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.md
canonical_url: https://help.salesforce.com/s/articleView?id=mktg.mc_es_suppression_lists.htm&release=264.0.0&type=5
source_site: help.salesforce.com
content_type: documentation
content_hash: ea9a3e239c91f420d3a7253ed8269c7b06ced81d4621ec9e2dd757aba9d1539a
description: You can use suppression and publication lists to manage opt-ins in Email Studio for Marketing Cloud Engagement. Use publication lists when you send email and SMS messages to a sendable data extension. Use suppression lists with guided, user-initiated, and triggered email sends.
products:
  - Marketing
  - Marketing Cloud Engagement
release: "264"
---
# Suppression Lists in Email Studio

You can use suppression and publication lists to manage opt-ins in Email Studio for Marketing Cloud Engagement. Use publication lists when you send email and SMS messages to a sendable data extension. Use suppression lists with guided, user-initiated, and triggered email sends.

A suppression list is a list of subscribers 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.

![Example](https://sf-zdocs-cdn-prod.zoominsoftware.com/tdta-mktg-mc_email-264-0-0-production-enus/a0b807ef-dfbb-412c-b26e-310d91f2d6df/images/icon_example.png)

Example Suppression lists include these subscriber key types:

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

Suppression lists help you manage the unsubscribe or opt-out actions of your subscribers. A single public suppression list affects the subscription center.

Use suppression lists to:

- Ensure that your messages are only sent to the subscribers who want to see them.
- Demonstrate your compliance with anti-spam laws and regulations.
- Control who receives particular communications from your company. In Enterprise 2.0, you can share suppression lists between parent and child business units.

Suppression lists contain fields for Email Address, Subscriber Key, Unsubscribe Date, and Unsubscribe Reason. You can’t add to or remove fields from a suppression list.

- **[Using a Suppression List](https://help.salesforce.com/s/articleView?id=mktg.mc_es_suppression_lists_in_your_send.htm&release=264.0.0&type=5)**  
    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.
- **[Subscribers on a Suppression List](https://help.salesforce.com/s/articleView?id=mktg.mc_es_subscribers_on_suppression_list.htm&release=264.0.0&type=5)**  
    Marketing Cloud Engagement lets you add subscribers to a suppression list in Email Studio via an Automation Studio import activity, SOAP Web Services API, or the import wizard in Email Studio Suppression List. The subscriber must be imported without a status column. Subscribers can also add themselves to public suppression lists via their subscriber center. When a subscriber uses a one-click unsubscribe, the subscriber is added to the suppression list. The subscriber remains on the list, data extension, or publication list with a status of Unsubscribed.
- **[Create a Suppression List in Marketing Cloud Engagement](https://help.salesforce.com/s/articleView?id=mktg.mc_es_create_a_suppression_list.htm&release=264.0.0&type=5)**  
    To prevent your users from receiving your messages, create a suppression list. You can also let users control whether they receive messages by making the suppression list public in the subscription center.
- **[Apply a Suppression List to a Marketing Cloud Engagement Send](https://help.salesforce.com/s/articleView?id=mktg.mc_es_apply_suppression_list_to_a_send.htm&release=264.0.0&type=5)**  
    Apply suppression lists to guided sends, user-initiated, and triggered emails in Email Studio.

#### See Also

- [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.")