Copy message between shared mailboxes using Graph

Question

Is there any Graph solution for moving a message between shared mailboxes? When I attempt either a move or copy of a message from my Inbox to a folder in a shared mailbox I receive the following error:

Item '...' doesn't belong to the targeted mailbox '...'.

As I understand it, Graph move and copy operations are scoped to the users mailbox. In Office-js this is possible with makeEwsRequestAsync using the CopyItem method, however this is being deprecated in October 2024. I know it is not an access issue as I can manually do it in Outlook by dragging the selected message into the destination folder in the side-pane. I would consider this an essential Graph requirement.

Answer 1

Hi @Oliver Dixon

According to the documentation, this endpoint is used to copy a user's mail from one folder to another folder, where the target mailbox needs to be a mailbox belonging to that user.

However, a shared mailbox is a separate mailbox that does not belong to a single user, so you cannot use the API to copy messages to a shared mailbox.

The EWS Move and Copy operations do support moving items between mailboxes.

Please refer to the link below for more information:

https://learn.microsoft.com/en-us/exchange/client-developer/exchange-web-services/how-to-move-and-copy-email-messages-by-using-ews-in-exchange

Hope this helps.

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