With GHOSTMAIL you can send invoices in PDF forma automatically when generating them.
All you have to do is selecting the relating function in the customer profile and GHOSTMAIL will do the rest.
Moreover, if you have selected two or more e-mail addresses per customer, a copy of the invoice will be sent to the other addresses, too.
In addition to invoices, customer using GEA CALZA have now the opportunity of sending customers their order confirmation.
Ask you sales assistant for any further information.