Use @mentions in a comment to get someone's attention, like for feedback or for more information, exactly where you want the help.
Sign in to Microsoft 365 with your work or school account, and go to a document that's saved in a SharePoint library or OneDrive for work or school.
Note: For this feature to work, you'll need to be signed in to Outlook on your PC.
Add a comment.
Type @ and the first few letters of the person's first or last name, and then pick the name you want. If they don't already have permission to open the document, you'll be asked to share the document with them.
Tip: 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.
Everyone you @mention will receive an email notification with a link that takes them directly to the comment where you mentioned them.