To move an email to the "Sent Items" of the delegated mailbox it was sent from add the following registry entry.


  1. Click Start, click Run, type regedit, and then click OK.
  2. Locate and then click the following registry subkey:
     

    HKEY_CURRENT_USER\Software\Microsoft\Office\x.0\Outlook\Preferences

    Note The x.0 placeholder represents your version of Office (16.0 = Office 2016, 15.0 = Office 2013, 14.0 = Office 2010).

  3. On the Edit menu, point to New, and then click DWORD Value.
  4. Type DelegateSentItemsStyle, and then press Enter.
  5. Right-click DelegateSentItemsStyle, and then click Modify.
  6. In the Value data box, type 1, and then click OK.
  7. Exit Registry Editor.