OWA / Office 2010 / Exchange 2010:  Opening another users mailbox in OWA

Posted on 2011-10-19
Last Modified: 2012-06-21
I want to access other users mailboxs via OWA.
I do NOT want to right click on my name and pick > Open Other Users Mailbox.

I want to go to the upper right hand corner, as shown, and pick 'Open Other Users Mailbox'  

I am new to Exchange 2010, and I am the exchange administrator, I should have full rights to all mailboxes.
Do I have to give myself more permissions, if so please advise what i have to do.

Question by:techgenious
    LVL 6

    Expert Comment


    You can get access to all mailboxes, but before I would like you to reconsider what you are trying to do.
    Access to mailboxes is denied for administrator by design for legal reasons. You 'should' not have full rights on mailboxes.

    You can do everything without having access to mailboxes, you just can not read mails.

    What are you willing to do with this right ?

    Finally, you can type this command to grant full access to all mailboxes in all mailboxes database
    Get-MailboxDatabase | Add-ADPermission -user [username] -AccessRights GenericAll

    Open in new window


    Author Comment

    Well let me ask you this, how do I get access to opening a users mailbox in OWA?
    I don't want to right click on their mailbox and give myself 'FULL' mailbox permissions.

    That is a pain when I am troubleshooting.
    I had an issue where the user advised cannot open OWA.   SO i went into OWA and  I did not have the option in the upper right hand corner to open other mailbox.
    How do I get that option.

    LVL 6

    Expert Comment

    You must click on your name in upper right corner to make the box appear


    Expert Comment

    Are you right-clicking on your name in the left-hand column (and not your inbox)? It should be there.
    Here is a pic of mine :

    As previous members said, you have to have permissions in order to open mailboxes. Admins do not have this by default.
     right click
    LVL 6

    Expert Comment

    I think he does not want to open the inbox this way. He wants to make the 'select mailbox' field appear.
    It is hidden and you need to left click your name in upper right corner to make it popup.

    Winny, there is no other way to access a mailbox than having full rights on the it since OWA will open its root folder with your credentials.

    On the other hand, opening just user inbox or calendar does not require much rights, just a delegate. This won't let you open the mailbox using the upper left 'select-mailbox' field.

    Author Comment

    Gerald you are right, I don't want to right click on my name and click > Open Other User's Inbox.
    I want to do it from the upper right hand corner.

    So basically your telling me, I have to give myself permissions to access a persons email.


    LVL 6

    Accepted Solution

    Well on Active directory level there is no other solution
    BUT there can be another way to grant someone a readonly access to some/all mapi folders.

    (I havnt test it, but technically it should work)

    From the user outlook mailbox, right click the top of his mailbox  (ie : Mailbox - John) and select Change permission sharing.

    In permission tab, add your account, and click read:none   Delete : none
    Check the box : Folder Visible

    Now on another folder (ie : Inbox) and choose Change Sharing permission
    Add your account in permission tab and select Reviewer
    Read : Full details
    Delete item : None
    Other : Folder Visible

    Do this for every folder you want to give yourself access in readonly mode

    Now try to open the mailbox from the top right corner in your OWA
    Only selected folders should appear, and you have only read rights.

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