How to use @mentions to get someone's attention on Outlook

In the body of the email message or calendar invite, enter the @ symbol and the first few letters of the contact's first or last name.

When Outlook offers you one or more suggestions, choose the contact you want to mention.

By default, their full name is included. You can delete a portion of the mention, for example, everything other than the person's first name.

The mentioned contact is added to the To line of the email or the meeting invite.