Reply Event
Occurs when the user selects the Reply action for an Outlook item.
Sub object_Reply(ByVal Response As Object, Cancel As Boolean)
object An expression that evaluates to one of the objects in the Applies To list. In VBScript, use the word Item.
Response The new item being sent in response to the original message.
Cancel Optional (not used in VBScript). False when the event occurs. If the event procedure sets this argument to True, the reply operation is not completed and the new item is not displayed.
Remarks
In VBScript, if you set the return value of this function to False, the reply action is not completed and the new item is not displayed.
Example
This VBScript example uses the Reply event and sets the Sent Items folder for the reply item to the folder in which the original item resides.
Function Item_Reply(ByVal myResponse)
Set myResponse.SaveSentMessageFolder = Item.Parent
End Function