# Email label policies inherit sensitivity from attachments

When users attach sensitive documents to emails, the email should inherit the highest sensitivity label from attachments to maintain consistent…

Source: https://maester.dev/docs/tests/ZTA.35014

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## Overview

When users attach sensitive documents to emails, the email should inherit the highest sensitivity label from attachments to maintain consistent protection. Without this setting enabled, users might send unlabeled emails that contain sensitive attachments, creating a mismatch between the email's sensitivity and its actual content.

Email label inheritance automatically applies the attachment's highest priority label to the email message, ensuring protection levels match and prevent accidental data exposure.

## Remediation

- [Publish sensitivity labels](https://learn.microsoft.com/purview/create-sensitivity-labels?tabs=modern-label-scheme&wt.mc_id=zerotrustrecommendations_automation_content_cnl_csasci#publish-sensitivity-labels-by-creating-a-label-policy) to [Configure label inheritance from email attachments](https://learn.microsoft.com/purview/sensitivity-labels-office-apps?wt.mc_id=zerotrustrecommendations_automation_content_cnl_csasci#configure-label-inheritance-from-email-attachments).

## Run it

The check runs as part of the whole assessment, with the ZeroTrustAssessment module installed:

```powershell
Install-Module ZeroTrustAssessment -Scope CurrentUser
Connect-Maester
Invoke-Maester -Pack ZTA -SkipBuiltIn
```

Leave out `-SkipBuiltIn` to run Maester's own checks in the same run.

<details>
<summary>About this check</summary>

| | |
| --- | --- |
| Severity | Medium |
| Effort to fix | Low |
| Impact on users | High |
| Pillar | Data, AI |
| Category | Label Policy Configuration |
| Product | [Purview](/docs/tests/products/purview) |
| Feature | Information protection |
| Area | Data protection |
| Licence | RMS_S_PREMIUM, Microsoft 365 E3 |
| Tenant | Workforce |

Product, feature, area and ATT&CK are Maester's: the assessment does not record them, so Maester keeps them in the pack's `taxonomy.json`.

</details>

<p class="mt-ms-note not-content"><svg class="mt-ms-note__logo" viewBox="0 0 21 21" aria-hidden="true"><rect width="10" height="10" fill="#f25022"/><rect x="11" width="10" height="10" fill="#7fba00"/><rect y="11" width="10" height="10" fill="#00a4ef"/><rect x="11" y="11" width="10" height="10" fill="#ffb900"/></svg><span>A Microsoft check, part of the <a href="/docs/tests/packs/zero-trust-assessment">Zero Trust Assessment</a> pack. Text from ZeroTrustAssessment 3.1.0, © Microsoft, <a href="/docs/tests/packs/zero-trust-assessment#licence">MIT licence</a>.</span></p>
