SOLVED! Outlook Sent Emails Go To Wrong Sent Items Tray

It's very common that an Outlook user will have several email accounts, some of these accounts are shared with work colleagues. When the user sending an email in behalf of a group, team, or department, he will want to have the Sent copy falls into the Sent Items tray under the related account, but not his personal Sent Items tray.

However, for some "unknown" reasons, sometimes users find mails like these will drop into their own Sent Items. That means, your work colleagues sharing the email account will not be able to keep track of these "Sent Out" emails.

To resolve the problem, try this:

• Set the DWORD value of the following registry key to 1:

Outlook 2007   HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Outlook\Preferences\DelegateSentItemsStyle

Outlook 2010   HKEY_CURRENT_USER\Software\Microsoft\Office\14.0\Outlook\Preferences\DelegateSentItemsStyle

Close your Outlook and start again. It suppose to be a known issue of Outlook 2007, but sadly carries on unresolved to Outlook 2010.

Reference: http://support.microsoft.com/kb/972148/en-us