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Can you connect to a Office 365 Shared Mailbox using a service principle instead of an actual user?

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Posted on by ford_sopris

I'm trying to make all my Flows not dependent on a user / password to make the connections. I've fixed most but now I've got another connection to an Office 365 Shared Mailbox. This is the trigger (when new mail arrives in shared mailbox) is the first step in a 1000+ action set of parent / child flows and I would like to use an Azure App Registration if that is possible. That will keep the Flow from stopping when my client forces a change of password on my service user.

Any thoughts?

Ford

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Michael E. Gernaey 53,932 Moderator on at

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Hi Ford,

I am super sorry I am wasted and about to sleep, but I am pretty sure you can use a Managed Identity, but I believe you need to use Power Shell to grant them actual Mail.Read access, and then you create your app registration and use the HTTP connector with the client secret etc.

and I know for sure you can make the flow run as a managed identity.

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Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
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ford_sopris 94 on at

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Thanks for the info Michael. From what it looks like, I cannot use this "Send an HTTP request" as a trigger (which makes sense) and I would have to put it on a recurring schedule to constantly check for new messages. I'd rather try to figure out if I can continue to use it as a trigger (currently use the "When a new email arrives" trigger).

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Michael E. Gernaey 53,932 Moderator on at

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Hi,

If this is your client, how do you plan to register the App in their AD, as that is where it would have to be if you plan to read email coming from their tenant

Cheers
If you like my answer, please Mark it as Resolved, and give it a thumbs up, so it can help others
Thank You
Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
LinkedIn: https://www.linkedin.com/in/michaelgernaey.

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ford_sopris 94 on at

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The client has no problem creating the App Registration, they just don't want to remove their password expiration policy so I'm trying to get away from using a named user for the connection.

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NickTT 236 on at

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I am looking to do the same thing. I have a Child Flow that will schedule meetings on behalf of the user. Was wondering if I could use the Azure App Shared Secret to do it instead. Then just permission the App to have Read\Write access to everyone's Calendar.

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