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Accessing Other People’s Mailboxes in O365

‚ÄčThe Full Access permission is required for a delegate to open a user's mailbox and access the contents of the mailbox. It doesn't allow the delegate to send email from the mailbox. The administrator has to additionally assign the delegate the Send As or the Send on Behalf permission to send email.

If you are using Outlook 2013 or Outlook 2010, the mailbox for which you have been granted access automatically display in your folder list.

In the example below, Adam Barr has been granted access to the mailbox of Kim Akers. Kim's mailbox displays automatically in Adam's folder list in Outlook 2013.

Note: If you were recently granted access to the mailbox, it may take a few hours for the other user's mailbox to display in your folder list.

Other Peoples mailbox Outlook.png 

If you are using OWA, the person's mailbox for which you have been provided access to will display in your Outlook Web App folder list every time you open Outlook Web App.

  1. Log in to your mailbox using Outlook Web App.
  2. Right-click your name in the folder list, and click Add shared folder.
    Other Peoples mailbox OWA1.png 
  3. In the Add shared folder dialog box, type the name of the mailbox that you have been provided access, and click Add.

Other Peoples mailbox OWA2.png 

  1. The mailbox appears in your Outlook Web App folder list.

Other Peoples mailbox OWA3.png 

If you have only been provided access to specific folders in the other user's mailbox, you will only see the folders for which you have been granted access.

If you decide that you no longer want to see the other person's mailbox every time you open Outlook Web App, right-click the folder, and click Remove shared folder.

Other Peoples mailbox OWA4.png

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