<p>Dear {$client_name},</p>
<p>This is a billing reminder that your invoice no. {$invoice_num} which was generated on {$invoice_date_created} is due on {$invoice_date_due}.</p>
<p>Your payment method is: {$invoice_payment_method}</p>
<p>Invoice: {$invoice_num}<br /> Balance Due: {$invoice_balance}<br /> Due Date: {$invoice_date_due}</p>
<p>You can login to your client area to view and pay the invoice at {$invoice_link}</p>
<p>{$signature}</p>