Save Sent Items in Correct Folder when Using Multiple Exchange Mailboxes

In Microsoft Outlook 2003, 2007, 2010, and 2013 (beta), you can add multiple Microsoft Exchange mailboxes by going into your Outlook account, and adding mailboxes like so:


However, when you send email messages from one of these additional mailboxes, you’d notice that your sent items would go into your primary mailbox’s sent items. This is a bug in Outlook. However, there is a hotfix for Outlook 2003, 2007, and 2010 to resolve this issue. For these versions of Microsoft Outlook, you can download the appropriate hotfix below:

After that is applied, a registery key needs to be added. The key that is added needs to be in HKEY_CURRENT_USER\Software\Microsoft\Office\{OfficeVersion}\Outlook\Preferenceswhere {OfficeVersion} is the following:

  • Outlook 2003 – 11.0
  • Outlook 2007 – 12.0
  • Outlook 2010 – 14.0
  • Outlook 2013 – 15.0

The key to add is a DWORD key named DelegateSentItemsStyle. The value for this key should be 1.

Using Outlook 2010 or Outlook 2013

If you are using Outlook 2010 or Outlook 2013, there’s a better solution. Starting in Outlook 2010, the application would allow you to add more than one Microsoft Exchange mailbox per profile. This solves this issue without applying these hotfixes.

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