--- title: "Activate or Deactivate a Robinson List in a Group" slug: "activate-or-deactivate-a-robinson-list-in-a-group" updated: 2025-10-07T11:47:11Z published: 2025-10-07T12:28:46Z canonical: "docs.mapp.com/activate-or-deactivate-a-robinson-list-in-a-group" --- > ## Documentation Index > Fetch the complete documentation index at: https://docs.mapp.com/llms.txt > Use this file to discover all available pages before exploring further. # Activate or Deactivate a Robinson List in a Group ## Goal To activate or deactivate a Robinson list in a Mapp Engage group. --- ## Prerequisites - The Robinson list feature is enabled for your system. - Mapp has activated and uploaded the list that contains the addresses you want to exclude from sendouts. --- ## Background Information A Robinson list is a type of "opt-out" or "do not contact" list. When activated for your Mapp Engage system, the Robinson list excludes contacts or email domains from Mapp Engage sendouts. For more information, see [Robinson Lists](/v1/docs/robinson-lists). --- ## Procedure 1. Go to *Audience > Group Management > Groups*. 2. Open the group you want to edit and go to the **Sendout Options** tab. 3. Select the **Robinson** **List** option that you want to use with this group: ![Settings for sendout options including Robinson List and message limitations.](https://cdn.document360.io/554b9b98-6720-4d8b-9919-c7b203d72648/Images/Documentation/robinson.png) - *On*: Members in this group are checked against the Robinson list during message sendout. - *Off*: Members in this group are not checked against the Robinson list during message sendout. 4. Click **Save**.