Hi Emily! If the user has their Axure Cloud notifications set to “All” or “Some”, then they will receive an email notification whenever they are @mentioned. If the user has their Axure Cloud notifications set to “None”, then they won’t receive an email, but they will still see the notification badge in Axure Cloud next to the workspace name, and once they enter the workspace, there will also be a badge next to the “Comments” section in the row of that project.
Users can also enable desktop notifications for @mentions as well in the Axure Cloud notification center (which can be found by clicking on your name or avatar in the top right corner, and then selecting “Notifications” from the context menu).