Notify user when on prem Exchange account is successfully migrated to Office 365

[Russell-T-Wall]

We have instructions on how to setup MFA and enroll in Intune as our clients are migrated from an on prem exchange to Office 365.  It would be great if we we could automatically trigger sending those instructions when the mailbox shows a complete migration.  I bet there are other Azure admin tasks that would benefit from being included as well!