Hi @Shane King ,
Based on my research, there is indeed no direct way to set up a rule for a shared mailbox when it only has been linked to your own Exchange mailbox account. However, there are several other ways to still get this to work:
Method 1: Outlook on the Web
After you log in to OWA, then click on the upper-right corner of your own name to enter the option to open another mailbox. Then set a rule in Outlook on the web for the shared mailbox.
Method 2: Additional Exchange account
- If you already see the shared mailbox folders in the folder list, it is possible that the mailbox is either Auto-mapped or was added using Open these additional mailboxes. You must first remove the configuration that added the mailbox before proceeding with the numbered steps below.
- To remove an Auto-mapped mailbox, see: https://learn.microsoft.com/en-us/outlook/troubleshoot/profiles-and-accounts/remove-automapping-for-shared-mailbox
- To remove another person's mailbox from Open these additional mailboxes, see Remove another person's mailbox.
To do this, click on the File tab and choose Add Account. When setting up the account, Auto Account Setup may recognize your main mailbox linked to your user account. When this happens, specify the email address of the shared mailbox or select the option to configure the Exchange account manually.
Once the mailbox has been added, select its Inbox folder and add the rule as you would normally do for your own mailbox.
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