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To make sure someone sees a comment, you can add them to it. They will receive an email notification with your comment.
Open a document, spreadsheet, or presentation.
Insert and type a comment.
Somewhere in your comment, add the name (with the first letter capitalized). When the correct person is suggested click their name. You can also add the email address of the person you want to see the message.
Note: If you add someone who doesn't have permission to see the file, you will be asked toshare the file.
Reply to or close comments
If you have permission to edit or comment on a document, you can reply to comments. When a discussion is finished, you can resolve a comment to close it.