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Using Outlook on the Web, you can add the shared mailbox to your folder list (Option 1) or open the mailbox in a new window (Option 2).

Please visit Microsoft’s documentation:

https://support.microsoft.com/en-us/office/open-and-use-a-shared-mailbox-in-outlook-d94a8e9e-21f1-4240-808b-de9c9c088afd

Option 1

This option adds the shared mailbox to your folder list.

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