> For the complete documentation index, see [llms.txt](https://help.nightfall.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.nightfall.ai/~/changes/OeQHuIkWUMEvfotVM6p8/gmail-dlp/installing-nightfall-for-gmail/configure-compliance-rules/configure-quarantine-rule.md).

# Configure Quarantine Rule

The Quarantine rule quarantines the email that contains sensitive data. The initial configuration steps are the same as in the case of the Scan rule.

{% hint style="info" %}
**Important**

You must configure this rule only if you wish to use the quarantine automated action.
{% endhint %}

1. Execute steps 1-13 of the [Configure Scan Rule](/~/changes/OeQHuIkWUMEvfotVM6p8/gmail-dlp/installing-nightfall-for-gmail/configure-compliance-rules/configure-scan-rule.md). If you are already on the Compliance page of the Google Workspace, execute steps 7-13 of the [Configure Scan Rule](/~/changes/OeQHuIkWUMEvfotVM6p8/gmail-dlp/installing-nightfall-for-gmail/configure-compliance-rules/configure-scan-rule.md).
2. In the **Match type** drop-down menu, select **Contains text**.
3. In the **Content** field enter **x-nightfall-quarantine**. Nightfall updates the headers for all emails that need to be quarantined with “x-nightfall-quarantine”, once they are processed and before they are routed back to Gmail. This enables Gmail to quarantine the emails with this header.
4. Click **SAVE**.

<figure><img src="https://2214688951-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Mg3wgFIu8T7XAT1u-f_%2Fuploads%2FYxcZTLF7TGAdWyCpezXe%2Fimage.png?alt=media&amp;token=0be3e911-fb1d-4667-8487-57517d2560fa" alt=""><figcaption></figcaption></figure>

4. In stage 3, select **Quarantine message.**

<figure><img src="https://2214688951-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Mg3wgFIu8T7XAT1u-f_%2Fuploads%2FjI2cvHbzbCLoFd4Anmzw%2Fimage.png?alt=media&amp;token=0eb0cd60-04c8-400e-a30e-b1aecbb6e602" alt=""><figcaption></figcaption></figure>

5. (Optional) Select the **Notify sender when mail is quarantined** check box to notify the sender when their email is quarantined.&#x20;
6. Click **SAVE**.

<figure><img src="https://2214688951-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Mg3wgFIu8T7XAT1u-f_%2Fuploads%2FNOIcjtbP4vgMHviWCp4I%2Fimage.png?alt=media&amp;token=9909d0b7-bf3b-4ce6-b9e8-45a0516b9ec7" alt=""><figcaption></figcaption></figure>


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