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Emails sent from Office 365 Shared Mailbox don’t appear in the correct Sent Items folder

Emails sent from Office 365 Shared Mailbox don’t appear in the correct Sent Items folder

Hi All,

I was doing some work for a customer who we had recently moved to Office 365. The customer had a shared mailbox 'info@domain.suffix' which was accessed by many users. All was working well - we assigned permissions to the Shared Mailbox for the appropriate users and the mailbox appeared in their Outlook 2013 clients. Emails sent to 'info@domain.suffix' came into the Inbox of the new mailbox and those same users could Send As using the From field inside their Outlook client. Great!

The problem came when users complained that any sent emails from the Shared Mailbox were being dumped into their own Sent Items folder and not that of the Shared Mailbox itself! Very annoying, particularly as other users couldn't see what had been sent historically.

Not wanting to use rules to automatically move the emails in question I did a bit of reading around the problem.



It turns out that by creating the following registry key you are able to change the way in which the Outlook client interprets where it stored emails sent from a Shared Mailbox.

Simply create the following to have this 'feature' corrected:-



DWORD: DelegateSentItemsStyle

Data Value: 1

Hope this helps!


9 Responses

  1. Steve


    What if we are using Office 365 with Outlook 2013 on Windows Server 2012 R2, in a terminal server environment. The proposed registry key isn’t available in a server environment. There is no Outlook/Preferences under 15.0.

  2. Stephen


    I am using Office365 and Outlook 2013.

    I have tried this issue and to no avail. I have also tried using the Hotfix resolve but also no such luck?
    I have also set cached mode to on in account settings and download from shared folders.

    Any advise?


    • Hi Stephen,

      The solution definitely does work with Outlook 2013 and Office 365. Please make sure that the Office version number is correct (at 15.0 for Office 2013) in the registry key location.

      More information can be found at the following Microsoft article – http://support.microsoft.com/kb/2703723

      If you’re referring to the following hotfix (http://support.microsoft.com/kb/2181579 in your comment then this will only amend for Office 2010. You should see the key differences in the article – 15.0 for Office 2013, 14.0 for Office 2010.

      Hope this helps.


      • Stephen

        Thanks Neil,

        Will try this again and hopefully work. Does it take long to work? Should I give it time before testing after I have implemented the requirements in the regedit?


        • Stephen

          Working. Thank you

          • Thanks for the update Stephen – glad it’s sorted.


          • Stephen

            This worked on windows 8. However, I tried to do this on windows 7 and it only lets me go as far as office/15.0 and then that’s it, no Outlook folder just Groove ?

            Also Is there a work around to access and edit another user profile regedit for this case. As most users will not have admin rights and blocked by group policy. Can we work around without changing group policy?


  3. Stephen

    Ok I think I have solved first issue. I need to create an outlook account on the machine first in my profile account, to create an outlook folder in the regedit.

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