How to Customize Microsoft Defender for Office User Results Emails
Question details
The user needs to understand how to customize the default text, title, header behavior, and supported formatting for Microsoft Defender for Office results emails, as official documentation is unclear.

- Product
- Microsoft Defender for Office
- Device & OS
- not provided
- Scenario
- An administrator is attempting to configure custom user result emails and automated notifications within Microsoft Defender policies.
- Observed behavior
- The official Microsoft documentation mentions customization options but lacks concrete details on the default template, header behaviors, and exact HTML or text formatting constraints.
Ensure you have global administrator or security administrator permissions in your Microsoft 365 tenant, and gather the specific Defender workflow and policy configuration details you are currently using.
Consult the Microsoft Tech Community Defender Forum
Since the official documentation lacks specific formatting constraints and header behaviors, reaching out to Microsoft specialists in the official community is the most reliable way to get accurate answers.
Microsoft Defender policies frequently update, and undocumented edge cases regarding HTML formatting or default text rendering are best addressed by product engineers and specialized administrators.
When submitting your query, always include the specific Defender workflow (e.g., Safe Links, Safe Attachments, or Quarantine notifications) you are trying to customize.
Open your web browser and navigate to the official Microsoft Tech Community website.
Search for the 'Microsoft Defender for Office 365' hub or navigate through the Security, Compliance, and Identity community sections.
Create a new post detailing your exact policy configuration. Ask specifically about the default email content, header behavior overrides, and supported HTML/text tags for the results email.

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Frequently Asked Questions
Can I use standard HTML to customize Microsoft Defender result emails?
Basic HTML formatting is typically supported in many custom notification fields, but complex inline CSS or specific header tags may be stripped by Microsoft 365 for security or rendering consistency. Check the community forums for the latest supported tags.
Where are email notification settings located in Microsoft Defender?
Most automated email notifications can be configured in the Microsoft 365 Defender portal under 'Email & Collaboration' > 'Policies & Rules' > 'Threat policies' (such as Quarantine policies or Anti-spam settings).
Why is my custom email footer not appearing in Defender notifications?
Your custom footer might be overridden by global Exchange transport rules, or the specific Defender policy triggering the email might not be linked to the customization template you edited.




