Email Templates

How can I send multiple invoices for the same customer in a single email

Document Document Number Document Date Due date Balance Document
Invoice 2014000001 14/05/2014 14/06/2014 2500.00€
Invoice 2014000023 15/05/2014 15/06/2014 3500.00€
Invoice 2014000099 16/05/2014 16/06/2014 5750.00€

                                                                                                          Total:	                11750.00€

The line items can currently be group with their own totals but to send multiple independent invoice would require custom coding I think.

And how can I do this