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Top 7 Best Back-In-Stock Apps For Shopify 2024

If your product is out of stock, shoppers can easily check another store with a few clicks. Getting these customers to return is not an easy task. It’s when back-in-stock apps come into the game and save your sales!

Based on Marketing Sherpa’s case study, back-in-stock alert emails can achieve a 22.45% conversion rate; so the restock alert apps can boost your store performance. 

Let’s find out more details about the best back-in-stock apps on the market to prevent lost sales!


What are back-in-stock notifications in e-commerce?

“Back-in-stock” is the situation in which something you wanted, but couldn’t get because it was sold out, is available again for you to buy. In e-commerce, back-in-stock alert refers to automated notifications sent to customers when a previously out-of-stock item becomes available again.

These notifications are designed to inform and re-engage customers who have shown interest in specific products but couldn’t purchase them due to out-of-stock issues. 

How do these “notify me when back in stock” work? Here are some typical steps: 

  • Customers sign up for waitlists.
  • Restock the products
  • Notifications are sent to all customers who signed up
  • Notifications are delivered via email, SMS, or push notifications

This one article is supported by BixGrow – an affiliate & referral marketing solution in Shopify.

How do Back-in-Stock apps help?

Back-in-stock notification apps are essential tools for modern e-commerce, enhancing both the shopping experience for customers and operational efficiency for businesses. 

  • Prevent lost sales: By notifying customers when items are restocked in time, you can recover potential lost sales that might have gone to your competitors. 
  • Increase impulse purchases: Prompt notifications can encourage quick purchases, capturing sales that might otherwise be lost.
  • Automatically inform customers: you can set the apps to automatically send notifications quickly and precisely without having to do the manual tasks. 
  • Collect customer data: By using in-stock alerts Shopify apps you can collect and analyze customer’s data, what products and services they like, their shopping behavior, etc. Track which products customers are waiting for, helping you understand demand patterns and make better restocking decisions.
  • Improve marketing and customer engagement: Some apps can give you access to customers’ real-time insights, you can use this data to tailor marketing campaigns and recommendations, increasing the relevance and effectiveness of your promotions.

Restock notification apps bring many benefits to your Shopify store, let’s dive in to see which are the best apps on the market. 

1. Back-in-stock Restock Alert ZA – Email alert for customers


Designed by Zooomy, Back-in-stock Restock Alert ZA is an amazing tool to keep customers updated about product availability;  it allows customers to opt for an email alert when their desired item is restocked

User Feedback on Back-in-stock Restock Alert ZA: 4.9 stars from 189 reviews

Key Features: 

  • Automatic and manual restocking email features
  • Back-in-stock / Restock with theme
  • Customize button messages


  • Free: Free
  • Pro: $5.99/month
  • Premium: $19.99/month
  • Advanced: $39.99/month

With options ranging from automatic email notifications to customizable back-in-stock button colors, it caters to startups, small and medium-sized enterprises (SMEs), and large corporations as well. 

The app has a collection page integration feature, allowing customers to subscribe to entire collections rather than individual products, making it easier to boost AOV. Back-in-stock Restock Alert ZA also has a wide range of notification email themes to match your brand. 

2. Restock Rocket: Back In Stock, PreOrder – Automatically email and SMS back-in-stock alerts 


With more than 1,800+ users, $2+ million total sales recovered and more than 82K orders recovered, Restock Rocket remains one of the most trusted restock apps on the market. 

User Feedback on Restock Rocket: 5.0 stars from 685 reviews

Key Features: 

  • ‘Notify me’ or ‘Preorder’ button
  • Automatic and multilanguage back-in-stock email, and SMS alerts
  • Customize pre-order button, restock alerts


  • Start: Free
  • Lite: $10/month
  • Standard: $29/month
  • Pro: $69/month

You can design and add a ‘Notify me when available’ button on your store’s out-of-stock product pages, and let customers register to get alerts. 

When you restock products in Shopify admin, customers will be notified instantly to purchase the product through a “back in stock” e-mail, SMS, or push notification alert. There are many customized email templates in multiple languages to aid customers worldwide. 

3. Swym Back in Stock Alerts – notify me when back in stock app for Shopify


Over 8,000 merchants use Swym to capture demand for out-of-stock and pre-order products and users report there are 30 to 35% click-through rates on alerts.

User Feedback on Swym: 4.8 stars from 652 reviews

Key Features: 

  • Automatic restock alerts via SMS/email
  • Run Facebook/Instagram retargeting ads 
  • AI-based product recommendations


  • Free: Free
  • Starter: $19.99/month
  • Pro: $59.99/month
  • Premium: $99.99/month

Swym supports anonymous customers to maximize usage, no login is needed for your shoppers to sign up for alerts. The app will automatically let shoppers know when a product is restocked, you don’t have to do anything. 

Swym enables Facebook and Instagram campaigns based on back-in-stock and pre-order activity and data; to help you maximize your ads campaign. 

4. Channelwill Back in Stock – Get restock alerts via auto email/SMS


According to Barilliance study, back-in-stock emails have the highest open rates of any email campaign type they analyzed, at 65.32 percent, almost 70 percent higher than the lowest-performing campaign type. Use Channelwill to take advantage of that high open rate, it is trusted by 300,000+ growing brands such as Samsung, Casarto, and Mistore. 

User Feedback on Channelwill: 4.9 stars from 470 reviews

Key Features: 

  • Automatic email / SMS notifications
  •  Free email template
  • Show button and popup on out-of-stock product pages


  • Free: Free
  • Pro: $5.90/month
  • Unlimited: $9.99/month

Channelwill is easy to install and use, offers customization, and integrates with Klaviyo, even on the free plan. Revitalize your customers to buy your products by sending email and SMS alerts, keeping them engaged and informed.

Chanelwill customer support is being praised for its effectiveness and quick response, their team is working 24/7, ready to solve all your problems. 

5. SC Back in Stock Restock Alert – Recover lost sales with restock alert app


Out-of-stock is a common experience for customers, Netstock’s survey shows that 82 percent of people who shop mostly or exclusively online say they’ve encountered stock-out products.  By automating notifications, personalizing customer interactions, and providing valuable insights, Shop Circle helps you run a more efficient and customer-friendly e-commerce business.

User Feedback on Shop Circle: 4.8 stars from 179 reviews

Key Features: 

  • SMS, email, and push notifications
  • Real-time updates on out-of-stock alerts
  • Batch alerts


  • Free: Free
  • Email Only: $10/month
  • Starter: $20/month
  • Pro: $45/month

Shop Circle offers a batch alert feature; by sending batch alerts, you can save time and resources while keeping customers informed and engaged with your brand. With an efficient batch alert system, you can target specific customer segments, optimize messaging, and increase the chances of a successful sale.

Besides, with Shop Circle’s help, you can create personalized re-targeting campaigns by analyzing customer data. Optimizing your retargeting efforts can improve your ads’ relevance and effectiveness, leading to higher conversion rates, increased customer loyalty, and, ultimately, more sales.

6. KB: Back in Stock and Restock Alerts – best back-in-stock app Shopify


With powerful features, such as Back-In-Stock, Price Drop, and Abandoned Cart notifications sent via Push, Email, and SMS, KB empowers you to seize every revenue opportunity that comes your way.

User Feedback on Krtbite: 5.0 stars from 1819 reviews

Key Features: 

  • Price Drop Alerts
  • Out of Stock Waitlist
  • Fully customize “Notify me when available” button and Notification templates


  • Free: Free
  • Basic: $5/month
  • Starter: $9/month
  • Pro: $19/month

KB offers many beneficial features like out-of-stock notifications, buy-back-in-stock alerts, price drop alerts, abandoned cart alerts, custom push alerts, and restock alerts. 

The app allows users to create a waitlist for out-of-stock & price-drop products, making it easy to see which products are in demand. Furthermore, you can design the “Notify me when available” button and notification templates to match your brand identity.

7. Appikon Back In Stock – Create waitlists and recover lost sales


Make sure your customers never miss out on their favorite items with Appikon Back In Stock; the app offers essential tools such as automated customer alerts, analytics dashboards, and reports, or customizable signup forms and buttons. 

User Feedback on Appikon: 4.9 stars from 1975 reviews

Key Features: 

  • Customizable signup form and notifications
  • Automatic back-in-stock notifications
  • Detailed analytics 


  • Free: Free
  • Starter: $19.199/month
  • Pro: $29.99/month
  • Premium: $49.99/month

Appikon can help build your subscriber base by inviting customers to enter their emails to be notified when items are back in stock, growing your mailing database automatically. It’s an effortless way to stay connected and boost your sales.

The app takes less than 30 seconds to install and operate; it also can integrate with Facebook Messenger, Mailchimp, and Klaviyo.  

Wanna see more best-app list?

The best back-in-stock app Shopify can help you convert these open rates into purchase rates. Dive in and find out which is the most suitable app for your e-commerce store.

Wrap it up

In conclusion, the top back-in-stock apps for Shopify in 2024 offer a range of features to help store owners capture sales and keep customers engaged. From automated alerts to customizable notifications, these tools are designed to recover lost sales and enhance the shopping experience. By implementing these apps, merchants can ensure they stay connected with their customers and maximize their store’s potential.

I have been working in marketing for four years, passionate about creative writing and copy writing. Love to be alone at watersides, sip coffee, play games or read anything that is thought provoking.


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