        <!-- Footer Section -->
        <tr>
            <td class="footer">
                <!-- Footer content will be fetched from a PHP variable -->
                 <?= $footer; ?>
            </td>
        </tr>
        <tr>
            <td class="unsubscribe-text">
                <!-- Unsubscribe text will be fetched from a PHP variable -->
                <?= $unsub_text; ?>
            </td>
        </tr>
    </table>
</body>
</html>