email sensitivity lable inheritance from attached files

Question

We have set our O365 environment up so that an email inhetits the sensitivity label from the attached file if that attached file has a highter sensitivity label.

This works fine but when the attached file is removed again before sending the email, the email retains the higher lebel setting instead of reverting back to the original default label.

Is this expected behaviour and is there an article that explains this?

Answer 1

Hi @Chris Mancey (Group) ，

According to the documentation, label inheritance from email attachments will replace a lower priority sensitivity label that is automatically applied or applied as a default label, but won’t override a higher priority label. This means that if you remove the attachment with a higher sensitivity label, the email will not revert back to the original default label, unless it has a higher priority than the inherited label.

This is the expected behavior, and it is explained in this article: Manage sensitivity labels in Office apps - Microsoft Purview (compliance) | Microsoft Learn

You can also learn more about sensitivity labels and how to configure them in these articles:

• Learn about sensitivity labels - Microsoft Purview (compliance) | Microsoft Learn
• Automatically apply a sensitivity label in Microsoft 365 - Microsoft Purview (compliance) | Microsoft Learn

Hope above can help you!

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