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I have an Outlook add-in that uses a unified manifest, and I want to deploy it to just my organization or my customers' organizations (so I don't want to put it in AppSource). Also, I'd like to be able to do this with a script. How can I do this? It seems like most mechanisms for deploying an Outlook add-in don't accept a unified manifest, is that true? Some methods I'm wondering about are:
New-App cmdlet does not seem to accept a unified manifest.New-OrganizationAddIn cmdlet does snot seem to accept a unified manifest.New-TeamsApp cmdlet accepts a unified manifest, but I'm not sure if it will work for an Outlook add-in.Are there any other scripting or API ways to install an Outlook add-in that will work with a unified manifest?
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As far as I know, the only way to deploy an Outlook add-in with a unified manifest (outside of AppSource) is through the Microsoft 365 Admin Center. You can do it manually by going to admin.microsoft.com - Settings - Integrated apps - Upload custom apps. It’s not scriptable, unfortunately, but for now, it’s the only officially supported method to deploy unified manifests to Outlook in a tenant.