Automatically BCC All Messages

Outlook doesn't have a built in method you can use to automatically include yourself (or other email address) in the BCC field when you send a new message. You can use Rules Wizard to CC and address but not BCC.

To BCC the message, you need to either use VBA or a utility.

VBA Code Sample

See How to use Outlook’s VBA Editor if you need help using VBA.

Private Sub Application_ItemSend(ByVal Item As Object, _
                                 Cancel As Boolean)
    Dim objRecip As Recipient
    Dim strMsg As String
    Dim res As Integer
    Dim strBcc As String
    On Error Resume Next

    ' #### USER OPTIONS ####
    ' address for Bcc -- must be SMTP address 
    ' or resolvable to a name in the address book
    strBcc = "address@domain.com"

    Set objRecip = Item.Recipients.Add(strBcc)
    objRecip.Type = olBCC
    If Not objRecip.Resolve Then
        strMsg = "Could not resolve the Bcc recipient. " & _
                 "Do you want to send the message?"
        res = MsgBox(strMsg, vbYesNo + vbDefaultButton1, _
                "Could Not Resolve Bcc")
        If res = vbNo Then
            Cancel = True
        End If
    End If

    Set objRecip = Nothing
End Sub

How to use VBA

Copy and paste the code from this page into your ThisOutlookSession project. To do this, click within the code, Select All using Ctrl+A, Ctrl+C to copy.

In Outlook, press Alt+F11 to open the VBA editor and expand Microsoft Outlook Objects then double click on ThisOutlookSession to open it in the editing pane and Ctrl+P to paste the code.

Don't forget to replace someone@domain.com with the correct address.

Tools

Always Bcc	Sperry Software's Always BCC add-in for Outlook is being released for Outlook 2010. The add-in automatically adds a CC/BCC email address to all outgoing emails - making it perfect for compliance reasons. It can also include a cc or a bcc based on conditions you set up, for instance if you are sending from a particular account. The add-in now works with Outlook 2010, both 32-bit and 64-bit.
AutoBCC	Use AutoBCC to automatically send a blind-copy of all your outgoing messages to another address, for monitoring team communications with customers or just to improve workflow. Free.
HiddenBCC	HiddenBCC is an add-in for Microsoft Outlook 2000/2002(XP)/2003 which enables you to automatically add a predefined BCC recipient to every outgoing message. Freeware version available.
SilentMail for Outlook	SilentMail for Outlook monitors outgoing emails and sends a blind carbon copy (BCC) of every email to a specified address. SilentMail for Outlook does this by copying the message from the Outbox mail folder, making the monitoring process invisible for the user. Supports all versions of Outlook. Does not require Exchange server.