Article ID: 2703723 - View products that this article applies to.
When you send an email message from a shared mailbox, the sent email message remains in your Outbox until you manually perform a Send/Receive operation.
This problem occurs when all the following conditions are true:
You can resolve this issue by using one of the following methods. If these methods are not acceptable, see the Workaround section for additional options.
Method 1: Change the value of DelegateSentItemsStyle to 0 in the registry.
If you set DelegateSentItemsStyle=0 in the registry, email messages that you send from a shared mailbox will be copied to your Sent Items folder and not the Sent Items folder of the shared mailbox.
Important Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration
(https://support.microsoft.com/kb/322756/ )in case problems occur.
If you must have the functionality that is offered by the DelegateSentItemsStyle registry value (=1), your other option is to change your profile from online mode to cached mode.
Outlook 2010 and later versions
If the methods provided in the Resolution section are not acceptable, and if your mailbox is located on Microsoft Exchange Server 2010 Service Pack 2 Update Rollup 4 or later version, or Exchange Server 2013 Cumulative Update 9 or later version or Office 365 Exchange Online, the Exchange administrator can configure similar behavior on the server. These configurations do not require the DelegateSentItemsStyle registry key to be enabled, therefore the issue will not occur.
Microsoft Exchange Server 2010 Service Pack 2 Update Rollup 4 or later:
Update Rollup 4 for Exchange Server 2010 Service Pack 2 introduced a new Exchange PowerShell cmdlet to configure the Sent Items folder to which a message is copied. Because this new feature is handled by the Exchange server, Outlook can be configured for online or cached Exchange mode. However, the Exchange server feature works only if the Outlook DelegateSentItemsStyle registry value is disabled.
For more information about the Set-MailboxSentItemsConfiguration cmdlet, click the following article number to view the article in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/2632409/ )Messages sent by using the "Send As" and "Send on behalf" permissions are only copied to the Sent Items folder of the sender in an Exchange Server 2010 environment
Microsoft Exchange Server 2013 Cumulative Update 9 or later or Microsoft Office 365 Exchange Online:
Cumulative Update 9 for Exchange Server 2013 introduced a new feature which allows administrators to configure the Sent Item folder to which a message is copied. Because this new feature is handled by the Exchange server, Outlook can be configured for online or cached Exchange mode. Please note that if you enable this feature and enable the DelegateSentItemsStyle registry value with a cached Outlook profile at the same time, two copies of the sent item will be saved in the shared mailboxes Sent Items folder.
For more information about this feature, go to the following blog:
(http://blogs.technet.com/b/exchange/archive/2015/03/03/want-more-control-over-sent-items-when-using-shared-mailboxes.aspx)- Want more control over Sent Items when using shared mailboxes?
The DelegateSentItemsStyle registry value is stored in the following location in the Windows registry:
HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\PreferencesNote In this registry path, x.0 corresponds to your version of Outlook (Outlook 2003 = 11.0, Outlook 2007 = 12.0, Outlook 2010 = 14.0, Outlook 2013 = 15.0, Outlook 2016 = 16.0).
The functionality that is provided by the DelegateSentItemsStyle registry value is described in the following articles in the Microsoft Knowledge Base:
(https://support.microsoft.com/kb/959628/ )Description of the Outlook 2003 hotfix package (Outlook.msp): December 16, 2008
(https://support.microsoft.com/kb/972148/ )When you send an e-mail message from a shared mailbox in Outlook 2007, the sent message is not saved in the Sent Items folder of the shared mailbox
(https://support.microsoft.com/kb/2181579/ )Email that you send on behalf of someone is not saved in their Sent Items folder
Article ID: 2703723 - Last Review: September 24, 2015 - Revision: 17.0