Any idea on adding a dialogue box prior to confirm or stop the command?

Basically I want to automatically BCC an email address but have the ability to opt out of BCC'ing it as well.


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 = "SomeEmailAddress"

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

Set objRecip = Nothing
End Sub