Hello! My name is Apurv, and I’m a Program Manager in Microsoft Office.

What’s New

We recently added the capability to @mention your collaborators in comments in Word, Excel, and PowerPoint. @mentions makes it easier for you to notify your peers, pull them into a document, and work together wherever you need their attention.

How it Works

To get started, simply make a comment and type @ in a file saved on SharePoint or OneDrive for Business. You’ll see a drop-down list of contacts that updates as you type more characters. Pick a name and finish writing your comment. To be more casual, feel free to delete everything except the person’s first name in the @mention. To include more people, type @ again and mention someone else.

Word, Excel, and PowerPoint will automatically send an email notification to whoever you tag with a link to the specific comment. This link will open in the Online version of the apps or directly in the iOS/Android app. If someone gets mentioned more than once, we’ll batch the emails together.

Learn More

Requirements & Known Limitations

  • You must be using Office 365.
  • The file must be saved in SharePoint or OneDrive for Business.
  • Tenants with conditional access will not be able to create @mentions. Please contact your IT Administrator for more information.
  • If you’re using the desktop version of Word, Excel, or PowerPoint (i.e. on Windows or Mac), you have to have configured and signed in to your Office 365 email account.
  • @mentions does not work with guest or external accounts (you cannot @mention such accounts nor can such accounts @mention in files outside of their tenant). You can still share with them directly.

Available to all Insiders

  • Windows build 1812 (11126.20266) or later
  • Mac build 16.20 (18120801) or later
  • iOS build 2.20 (18120200) or later
  • Android build 16.0.11328.20008 or later
  • Available to all O365 users in Word, Excel, and PowerPoint Online


We’re eager to hear your feedback! You can leave comments on this post or submit feedback in Word/Excel/PowerPoint:

  • On Windows go to File > Feedback
  • On Mac go to Help > Feedback
  • On iOS/Android go to Settings > Send Feedback
  • For Office Online go to Help Improve Office

Source: @mentions for comments in Word, Excel, and PowerPoint available to Insiders Fast Office Insider Blog