MS Planner traffic does not appear in CloudSOC Investigate or sent for content inspection.
See Supported Gatelets objects and Activities for supported Gatelets and activities.
O365 Planner and other services not listed in the above tech-note are currently not supported by the existing Gatelets.
- O365 Sharepoint and OneDrive are fully supported. if the contents are stored in those two location then the contents will be scanned (which is the case for most of Microsoft SaaS Apps).
- Defining a Custom Gatelet in Cloudsoc is always an option , please review the article for more details.