Dear {user_full_name}
{user_company_name}
Your invoice {invoice_num} is now overdue, please make the payment as soon as possible to prevent any interruption of service.
Thank you for understanding.
Invoice Details
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{invoice_items_html}
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Sub Total: {invoice_subtotal}
Tax(%{invoice_tax_rate}): {invoice_tax}
------------------------------------
Amount Payable: {invoice_total}
------------------------------------
Last Payment Date: {invoice_date_due}