When we have an array-type variable, such as tracking updates in tracking_number.events, we can use for to display each item of the array in an organized way. For example, with for, we can show each tracking update with details like date, event type, location, and description: 
{% for event in tracking_number.events %} <br>

  {{ event.date|date("d/m/Y") }} <br>
  {{ event.label }} <br>
  {{ event.location }} <br>
  {{ event.description }} <br>

{% endfor %}
Example output of the code (Using an HTML table and CSS styling): Example of `for` loop Inside the loop, we use event.variable to access each part of the tracking update. This simplified approach allows us to display all tracking updates clearly and organized. It is important to note that you can use HTML together with CSS to enhance the presentation of iterated information in email messages.