Invoice
Here you will see the customer's e-mail recipient of invoices/reminders to which the invoice will be sent by using the button Send via e-mail in the Window functions.
Printout Via
Here you will see the default printout method that will be used in the Print Invoices procedure when selecting Printout according to customer setting in the Window functions. This printout method is configured in the Update Customer procedure in the field Invoice printout via. The available methods are Printer and E-mail.