Running out of stock is a normal part of eCommerce, but losing customers because a product is unavailable doesn’t have to be. When shoppers see “Sold Out,” most of them leave — and many never return. That’s why back in stock notification Shopify apps have become essential tools for modern online stores.
These apps automatically alert customers when a product is restocked, helping merchants recover missed sales, improve customer satisfaction, and build stronger relationships with shoppers. Whether you are a small business or a large enterprise, the right Shopify restock alerts app can significantly boost revenue.
Best Back in Stock Notification Shopify Apps to Recover Lost Sales
✅ 1. NotifyEZ – Messaging & Alerts (Best Overall Back in Stock Notification App for Shopify)
NotifyEZ – Messaging & Alerts is an all-in-one notification powerhouse designed for Shopify merchants who want complete control over how back-in-stock alerts are delivered. Unlike most apps that limit you to their own email or SMS gateway, NotifyEZ allows stores to use their own SMTP or SMS providers, ensuring better deliverability, lower messaging costs, and full brand consistency.
It is the perfect choice for businesses that need advanced automation, multi-channel notification options, and a robust system for both customer and internal staff alerts.
Why NotifyEZ Is the #1 Back in Stock Notification Shopify App
Most restock notification apps only support email or charge extra for SMS. NotifyEZ stands out by offering multi-channel notifications with your own gateways, giving businesses full ownership over messaging and unlimited scalability.
Key Features (Simplified & Optimized for This Topic)
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Multi-channel restock alerts via email and SMS
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Use your own SMTP or SMS gateway, reducing cost and improving deliverability
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Automated triggers when a product or variant is restocked
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Customizable templates for professional branding
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Internal staff notifications for inventory teams
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Full delivery logs & resend options to ensure message reliability
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No-code automation builder for creating flexible notification workflows
With these capabilities, NotifyEZ provides the most complete back in stock notification Shopify solution — ideal for stores that want flexibility, reliability, and enterprise-level performance.
⭐ 2. Back In Stock: Restock Alerts
Back In Stock: Restock Alerts is one of the most widely used stock alert apps on Shopify. It’s simple, effective, and easy to install, making it perfect for beginners.
Key Features
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Email & SMS alerts
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Customizable subscription widget
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Multi-language support
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Basic analytics
Best For:
Small-to-medium stores wanting quick setup with minimal configuration.
⭐ 3. Restock Alerts by Webkul
Webkul delivers a professional stock alert tool with strong customization.
Key Features
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Variant-level tracking
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Multi-language support
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Customizable alert forms
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Customer subscription management
Best For:
Merchants targeting international customers or needing advanced customization.
⭐ 4. Back in Stock – Out of Stock Alerts
This app focuses on simple yet reliable restock notifications.
Key Features
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Automated back-in-stock emails
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Customizable signup button
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Low-stock notifications
Best For:
Budget-conscious merchants who need essential functionality.
⭐ 5. Back in Stock: Sold Out Notifications
A polished and user-friendly app designed for higher engagement.
Key Features
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Email & SMS alerts
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Stylish popup signup form
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Customer tracking dashboard
Best For:
Stores in fashion, beauty, and lifestyle.
⭐ 6. Notify Me! Back in Stock Alerts
Known for clean UI and flexibility, this app blends aesthetics with practicality.
Key Features
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Modern signup widget
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Email notifications
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Theme compatibility
Best For:
Merchants who care about front-end design and user experience.
⭐ 7. Now Back in Stock
Built for performance, this app emphasizes speed and efficiency.
Key Features
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Instant restock triggers
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Variant-based notifications
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Easy installation
Best For:
Merchants wanting a fast, plug-and-play solution.
⭐ 8. Back in Stock + Out of Stock Alerts
A functional tool with strong template customization.
Key Features
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Branded email templates
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Variant tracking
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Custom popup forms
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Low-stock reminders
Best For:
Merchants wanting both customer-facing and internal notifications.
⭐ 9. Stockify – Back in Stock Alerts
A simple, lightweight app perfect for beginners.
Key Features
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Email alerts
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Dashboard analytics
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Customizable alert box
Best For:
Small stores that want essential restock alerts.
⭐ 10. Restock Rocket
A stylish, modern app focused on conversion-friendly design.
Key Features
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Clean, attractive subscription widgets
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Email & SMS alerts
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Customer insights
Best For:
Brands that value aesthetics and user interface quality.
Every app on this list helps you re-engage customers when products become available again. But NotifyEZ delivers a level of flexibility, cost control, automation depth, and multi-channel support that no other app matches.
With features like:
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Restock alerts via SMS & email
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Use-your-own gateways
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Advanced no-code automation
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Internal staff alerts
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Full delivery logs
NotifyEZ is the ultimate choice for Shopify stores that want a scalable and powerful back in stock notification Shopify solution.
If you want the most customizable, reliable, and cost-effective restock alert system for your business, NotifyEZ – Messaging & Alerts is the clear #1.