How to create a custom app for out-of-stock product notifications?

I would Like to create a custom Shopify app that aims to enhance the customer experience by providing a “Notify Me” feature for out-of-stock products. When a product becomes unavailable, our app seamlessly integrates a popup notification, offering customers the option to subscribe and receive an alert when the product is back in stock. This feature not only helps customers stay informed but also increases the likelihood of conversions by allowing them to express their interest and receive timely updates. By leveraging our app, Shopify store owners can effectively manage customer expectations and foster a positive shopping experience, ultimately driving customer satisfaction and loyalty.

please guide how can do this.

Hi Sheeraz,

Klaviyo app would be a good choice for you.

To build a back in stock flow with Klaviyo:

https://help.klaviyo.com/hc/en-us/articles/115003872251

Hi @AltheaC

We’re BSS Commerce - Shopify Partners & Experts providing Shopify apps and Store Development on Shopify & Shopify Plus.
We’ve carefully checked your requirement and of course we can build an customized app for your demand. So we suggest hiring a developer.

It’s what we can help with an optimal solution. If you need help from our expert, kindly share your request with us via Shopify experts.

We will check it and give you a detailed solution. We’re looking forward to working with you.