Enable or Disable notifications for a diagram

There are two settings that control notifications for individual diagrams (emails sent when someone else has made changes, or when they mention you with an @tag):

1. The global setting 'Enable Diagram Notifications' in your settings page at https://coggle.it/me. If this is disabled, no notifications will be sent for any diagram. Click on the slider to toggle it:
2. There is also an individual setting for each diagram, available in the documents list: 

To disable notifications for a single diagram, hover over its thumbnail in the documents list, click 'Diagram Options', and then click on the envelope icon. A green dot means that notifications are enabled, a grey dot means they are disabled.