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BlackRiver
Copper Contributor
Mar 08, 2025

Other employee email folders appearing in nav pane

I am using Outlook Classic.  Today, I noticed that 3 of my employee's are appearing in the left navigational pane.  Upon opening each name, I see their email structure, folders and sub-folders.  I also see that Outlook is "updating" those employees.  My first idea was that somehow those employees were "shared mailboxes", but no reference in Outlook shows that any "shared mailboxes" have been setup.  I have check the account settings and only MY email address is shown.  I have tried the following  ............

  1. Select File > Account Settings > Account Settings.
  2. On the Email tab, select the Exchange account, then click Change > More Settings.
  3. On the Advanced tab, under Open these additional mailboxes, select the other person's mailbox and then select Remove.

But, no other mailboxes are shown .......

Any ideas where I might go from here to remove those employee references in my Outlook ??????

Black River Computer Services

  • You can also check manually go going to the admin portal/users/click on the users that you see in the nav pane. A pop up side window will open, click on "Mail" in the top nav options. Mailbox permissions is there, you can remove the user showing all the mailboxes. 

     

  • It's not necessarily just shared mailboxes that can show up in this manner, every mailbox can be delegated. If you are not seeing them under Open these additional mailboxes, and you haven't added them manually, it's very likely that an admin granted Full access permissions on said mailboxes with the Automapping flag configured (which is on by default).

    If you have admin permissions, you can confirm this via the admin portal or PowerShell:

    Get-MailboxPermission email address removed for privacy reasons

    If your user is listed in the output of the above cmdlet, you have been granted Full access permissions. You can also list all (user) mailboxes to which a given user has been delegated access via:

    Get-Mailbox -RecipientTypeDetails UserMailbox | Get-MailboxPermission -User vasil

     

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