If you find a fraudulent email, it is important that you mark it as a phishing email. If you clicked on any attachment or a link where you input information, please submit a ticket ASAP!
In the Outlook Web version, when you click on the mail you want to report, it will should up in the following toolbar:
In the Outlook Desktop app(classic version), it will show up in a toolbar as well:
Recommended: Please maximize your the webpage/desktop app so it appears like the images above