Table of Contents
This updated guide examines Office 365 Will Have the New Unverified Sender Feature and organizes the essential facts, background, and practical takeaways in clear American English.
The Unverified Sender feature is described on the official Microsoft Roadmap as follows:
'Unverified Sender is a new feature of Office 365 that helps end users identify suspicious emails in their inbox. To help customers identify suspicious emails in their inbox, we added an indicator that Office 365 Spoof Intelligence cannot verify senders. '
How does the Unverified Sender feature work?
The Unverified Sender feature works by providing you with a separate visual indicator. Instead of the usual name tag that includes the avatar or contact abbreviation, a question mark is displayed.

This significantly increases the opportunity for Office 365 users to quickly detect potential phishing attacks or attempt to spoof potential senders.
- 25% of phishing email defaults on default security of Office 365
However, the Unverified Sender filter will not analyze any email from a given sender, if the user has placed that sender as Safe Sender in his or her inbox.
In addition, emails distributed via admin permission lists are not analyzed.
Which criteria will Outlook use to mark emails?
To avoid the question mark in the sender image, email must pass SPF or DKIM authentication and receive dmarc or general authentication from Office 365 Spoof Intelligence.

To be approved, the domain from From needs to be the same as the domain from theDKIM or SMTP MAIL FROMsignature .
On the other hand, Outlook will display the domain in either of those two fields, with the option for DKIM signatures.
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What is Office 365 Will Have the New Unverified Sender Feature about?
It provides a structured overview of Office 365, explains the main context, and highlights practical takeaways for readers.
Why does this topic matter?
Understanding the main concepts helps readers evaluate the issue, avoid common mistakes, and make better-informed decisions.
How should readers use this information?
Use the guidance as a practical starting point, confirm details that may have changed, and follow current product, safety, or security recommendations.
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