Office 365 Mailbox Provisioning events

[sillyjohn]

We are in the process of automating the process of notifying the users when a mailbox is provisioned. The real need is to inform the users via email when a mailbox gets provisioned for them. Is there any events that are available in Office 365 Infrastructure (like a webhoob endpoints, queue configuration etc.) which can be leveraged to trigger the email communication? 

[#2]

Closes you can get is the Unified audit log/management activities API: https://docs.microsoft.com/en-us/office/office-365-management-api/office-365-management-activity-api...
Or you can just spam the Get-Mailbox cmdlet periodically.