This guide explains how to integrate the Back-in-Stock notification functionality between Shopify and Voyado Engage. This feature enables customers to subscribe to notifications for out-of-stock products and receive alerts when they are restocked.

Prerequisites

Before setting up the Back-in-Stock functionality, ensure the following:

• A connected product feed is set up in the Engage environment.
• The Back-in-Stock module is enabled in Engage.
• A Back-in-Stock email template is available in Engage.
• All products (including out-of-stock items) must be present in the product feed. If a product is not in the feed, no notification can be sent for it.

Setting Up Back-in-Stock Integration

Enable Inventory Sync in Voyado Engage App

1. Open the Voyado Engage app in Shopify.
2. Navigate to Settings.
3. Locate the Inventory Sync toggle and enable it.
4. Ensure inventory levels sync correctly from Shopify locations that fulfill online orders.

Add Back-in-Stock Theme Block in Shopify

1. In Shopify Admin, go to Online Store Themes.
2. Click Customize to open the Theme Editor.
3. Select Product Templates and find the Default product page template.
4. Add the Back-in-Stock block to the template.
5. Customize the form if needed.
6. Save the changes.

Configure Product Settings for Subscription Form

For the subscription form to appear on the product page:

• Ensure that Track quantity is enabled in Shopify Admin.
• Ensure that Continue selling when out of stock is NOT checked.

Automate Notifications in Voyado Engage

1. In Voyado Engage, navigate to Automation.
2. Create a new automation using the Back-in-Stock trigger.
3. Set up the automation to send email or SMS notifications when a product is restocked.
4. Save and activate the automation.

Implementing Back-in-Stock for Shopify Headless

If you are using a Shopify headless setup, you will need to implement the subscription form manually using Voyado's API. The API allows customers to register their interest in out-of-stock products without using Shopify’s built-in theme editor.

To implement this, refer to Voyado’s Back-in-Stock Headless API documentation: Headless API Guide

Steps to Implement:

1. Use the API to collect customer information and product details.
2. Ensure that product IDs match those in Voyado Engage.
3. Send the subscription request to the Voyado Back-in-Stock API endpoint.
4. Handle customer confirmation and manage subscription preferences programmatically.
5. Test the integration to ensure customers receive notifications when products are restocked.

Testing and troubleshooting

Test the feature by marking a product as out of stock, subscribing to notifications, and then restocking it to ensure an email/SMS is received.

If notifications are not being sent, check:

• The product feed includes the item.
• The email template is correctly set up.
• The automation is active in Voyado Engage.

Article last reviewed 16 February 2026 10:33