<div style="font-family: Arial, sans-serif;">
<p>This is a billing reminder that your invoice is due soon.</p>
<h4>Invoice Details:</h4>
<ul>
<li><strong>Invoice Number:</strong> #{{invoice_number}}</li>
<li><strong>Created:</strong> {{invoice_created}}</li>
<li><strong>Due Date:</strong> {{invoice_due_date}}</li>
</ul>
<p>You can log in to your client area to view and pay the invoice: <a href="{{invoice_link}}">{{invoice_link}}</a></p>
</div>