title: How can I echo Woocommerce shipment tracking in an email template?
body: <p>In the Woocommerce Shipment Tracking  plugin they use: </p>
  
  <pre><code>&lt;?php echo esc_html( $tracking_item['tracking_number'] ); ?&gt;
  </code></pre>
  
  <p>to get the shipping tracking number. How can use something similar directly in a Woocommerce email template? </p>