To send SMS updates about order status in Shopify (including events like Cancel Line Item, Return, Refund,
RTO, etc.), you need to

1. Use a Third-Party SMS API:

•  Integrate an SMS API like Twilio, Plivo, or Nexmo, which supports SMS in India.
• Use the API to send SMS notifications to customers about order status updates.

2.Set Up Shopify Webhooks:

• Use Shopify Webhooks to capture events such as Order Created, Order Fulfilled, Order Paid,
  Refunded, etc.
• The webhook will send event data to your server.

3.Server-Side Integration:

• Create a backend server (using Node.js, Python, etc.) to listen to these webhooks
• On receiving a webhook, extract the customer’s phone number and the order details, then use
  the SMS API to send relevant notifications

4.WhatsApp Integration:

• You can also integrate WhatsApp notifications via apps like Twilio for WhatsApp, WATI We
  have many Apps. These apps allow you to send WhatsApp messages for order updates

This setup gives you full control over SMS and WhatsApp notifications for events not natively supported by
Shopify