Lester,

Just to get this clear in my mind: are these invoices that have already been sent to the customers, but which have gone beyond terms?

If the customer has the invoices already, does sending them two more copies not result in total confusion and a lot of work on their part to prevent duplicate postings and payments?

That said, an experienced consultant might be able set up a system using Crystal Reports that would generate a single PDF for each customer with a -- perhaps simplified -- invoice summary. The big issue would, I think, be getting Crystal to make separate files to e-mail to each customer.