In bamboo you can receive a notification when a build succeeds (green), fails (red), when it changes between the two, such as
"Change of Build Status
Bamboo will send a notification only when there has been a change in status of the plan's build activity over consecutive plan builds — for example, only whenever a plan's latest build changes from successful to failed or vice versa (i.e. 'fixed').
https://confluence.atlassian.com/bamboo/configuring-notifications-for-a-plan-and-its-jobs-289276973.html
HOWEVER ... I want to receive a notification when build does not start (grey icon, aka Not Built). For some reason that is not considered a "Change of Build Status". I get emails when a build fails and when it is successful again, but not when it does not start. A build cannot start if the harddrive is full, for example. We're using bamboo server 5.9.7 and here's a screenshot of the icon

Does anyone know how to configure a bamboo notification to be sent when a scheduled build does not start?