The idea is that you either manually run a macro on a selection of items as above or you run it on a single item as in the code I posted in the thread http://www.vbaexpress.com/forum/show...ttachments-VBA e.g.
This type of code can be run from a rule to perform a task on the current message (Item)Public Sub ProcessMessage(Item As Outlook.MailItem) 'do stuff with Item End Sub