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How to use Power Automate to update the subject line of an email received after a D365 Case number is created

Hi there,


I am using Power Automate to auto-create cases in Dynamics 365 Customer Service when an email is received in a Support inbox. the process works well, except I would like to be able to automatically update the subject line of the received email in Outlook with the case number after the case is created.


For example, if the email subject is "Error message in program" and the case number generated is "CAS-12345-ABCD", then I want the subject line updated to "CAS-12345-ABCD: Error message in program" against the email received in the inbox. This would make it much easier to match the emails to the created cases when viewing in Outlook.


Is there any way of doing this via Power Automate or other means? I see that I could forward the email or reply to the email and update the subject, but ideally I want to update the original email message received to keep it clean.


Thank you.    


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