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I am using the Graph API endpoint (https://graph.microsoft.com/v1.0/users/******@xxxcom.au/mailFolders/Inbox/messages) to access the web link in a shared mailbox. The web link works when I call the API without specifying the immutableId in the header. However, when I include the header request Prefer: idType=immutableId, the web link returned is not functional, and I receive the error message: "This message might have been moved or deleted."
I also tried a similar approach using my own mailbox via https://graph.microsoft.com/v1.0/me/messages, and both web links worked as expected.
I am wondering if the web link with immutableId is not supported for shared mailboxes, or if there is another reason why it doesn't work in this case. Your help would be greatly appreciated. Thank you!
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Hello PO,
Thank you for reaching out to Microsoft Support!
According to the documentation, immutableId does not support Mailfolder and is therefore not supported when you access shared mailboxes.
Hope this helps.
If the answer is helpful, please click Accept Answer and kindly upvote it. If you have any further questions about this answer, please click Comment.
Thank you, @Anonymous for your response.
My understanding from the documentation is that the MailFolder already has an ID that is constant, hence the concept of immutability might not be relevant to MailFolder. Additionally, I am having difficulty finding any documentation about the limitation on shared mailboxes. If this limitation is indeed true, it might be helpful for Microsoft to update or include this information in their documentation.
Thank you for your assistance.
The facts as you stated, after the test, when using /me endpoint WebLink effective access to mail.
But through the users/{userPrincipalName}/mailFolders/Inbox error messages for the WebLink.
Even WebLink fetched by users/{userPrincipalName}/messages/{id} is the same error.
Therefore, the error is not relevant to mailFolder, and the limitation is not mentioned in the documentation queried, so the problem may be the cause of the API, and it is recommended that you can provide feedback here or open a support ticket for further help.
