Outlook: How to open a shared folder or mailbox in Outlook for Mac

Method 1: Open Other User's Folder

• This method is best used when you only have to open one main folder that is shared with you, such as the Inbox, Calendar, or Address Book.
• To open the shared folder, click Open on the File menu, and then click Other User's Folder.
  
  

Method 2: Add the mailbox under People I am a Delegate for

• This method is best used when you are a delegate for another user's mailbox or when you have permissions to several folders in a shared mailbox.
• This method can also be used when you have full access permissions to a mailbox.
• To open the shared mailbox, click Accounts on the Tools menu, click Advanced, and then click Delegates. Add the mailbox under People I am a delegate for.
  
  
  
  Note If you have permissions to custom folders in the mailbox but not to the top-level mailbox folder, the custom folders will not appear in the folder list. Only default folders that you have permissions to, such as Inbox, Sent Items, Deleted Items, and Calendar, will appear in the folder list without top-level mailbox folder permissions.

Method 3: Add an additional Exchange account by using your own credentials

• This method is best used when you have full access permissions to a shared mailbox.
• This method can also be used when you have permissions to the top-level folder of the mailbox and to several subfolders.
• To open the shared mailbox, click Accounts on the Tools menu. Click the Plus Sign to add an additional Exchange account. Enter the shared mailbox in the E-mail address field, and then enter your own credentials under Authentication.
  
  

• When you use any of these methods, the shared mailbox account is added as an option in the From field when you compose emails. This lets you select the account in the From field regardless of whether you have permissions to send from this account. If you do not have "Send As" or "Send On Behalf of" permissions for the account, email from the account will not be sent.
• Outlook for Mac does not support Auto-mapping of shared mailboxes.