Ever wondered how to add multiple items in sendgrid template ?
For example you need to notify your platform users about list of courses available. Since the number of courses are dynamic you cannot create a static template for it.
Lets take an example of Grocery list template

The list of items is dynamic.

{"items":[{"name":"onion","quantity":5,},{"name":"potato","quantity":5,},{"name":"chilli","quantity":5,}]}

Inorder to iterate over the items of the nested array, sendgrid gives handlebar capbilities. Example code

{{#if items}}<h2style="margin:10px 10px">Grocery items !</h2>  {{#each items}}<divstyle="border:1px solid black;min-width:300px;min-height:50px;padding:10px 10px;margin:10px 10px">        Got to buy {{this.name}}</div>  {{/each}}{{/if}}

You can include the similar code to iterate over items and produce a good marketing email templates.