So, you want to send a client a statement showing his outstanding invoices. Well, it is not that hard:)
First, click on the accounting option.
Next, click on the accounts recievable option.
You will need to filter for the client in quetsion. Enter their name in the customer field and this will display the desired outstanding invoices.
You now print to PDF. It will ask you which fields that you want to include in the report. I chose: invoicing date, voucher number and invoiced amount.
You are done
Sales Invoice statement for client