Some of our customers (the NHS) require invoices via A PEPPOL Provider, some would like invoices by email, or email and copies by post also, the ability to set very specific requirements by customer would be very useful, even better if this was customisable to select the customer to send via Peppol but also with a configurable  analysis code if so required i.e. if analysis code is set to X send via PEPPOL   All other analysis coded invoices could be sent by email or post dependent on the settings against the customer table