email mail personalised mail merged document

Hi

I run a small business where every month I have to invoice some 30 clients for services thro that month.

I've set up a numbers spreadsheet to and merged it with a pages document to generate individual invoices. This will be great if I wish to print out the individual invoices. I'd quite like to save the odd tree and send the invoices by emai.Does anyone know how I might do this using Numbers and Pages?