Student agenda emails are sent before 7 am each morning when an active flex period is scheduled that day. The timing of the notification email cannot be customized.
Below is the admin screen in Flex where student agenda emails can be turned on. In addition to email notifications - browser and mobile "Push notifications" can also be enabled for students to receive their morning agenda information.
Below is an example of what the agenda email looks like:
For more information, please see the Flex Admin Guide, which can be accessed from within Flex > HELP > Documentation.