5 Best Shopify Stock Alert Apps in 2026

Introduction

Inventory stockouts can quickly lead to lost sales and disappointed customers. For Shopify merchants, ensuring shoppers can request notifications for restocked or out-of-stock products is crucial to capturing demand and nurturing loyalty. Whether you sell in a single market or globally, having a reliable "Notify Me" or back in stock alert system can help you recover missed revenue and keep shoppers engaged. With so many options in the Shopify App Store, it’s important to choose a stock alert app that fits your business size, notification needs, integration stack, and budget.

The best Shopify stock alert apps offer more than just simple email notifications. Merchants should consider multi-channel capabilities (like SMS, email, or push), language support for international audiences, deep integration with marketing platforms, and scalable pricing. The right app will streamline back in stock notifications, support your growth, and help you maintain a positive customer experience even when inventory fluctuates.

Short answer: SC Back in Stock Notify Me is our #1 pick for best Shopify stock alert app in 2026. It combines broad language coverage, robust integrations, powerful automation, and flexible pricing—making it ideal for merchants of all sizes who want to maximize recovered sales from out-of-stock products.

SC Back in Stock Notify Me

Overview: Developed by Shop Circle, SC Back in Stock Notify Me is designed to help merchants recover lost sales by automatically alerting customers when products are restocked. The app addresses common pain points around missed revenue and manual follow-ups, letting merchants capture demand through back in stock alerts, restock notifications, and low stock warnings across a wide range of channels and languages.

Key Capabilities:

• Back in Stock Alerts & Restock Notifications: Instantly notify waiting customers when products are available again, reducing the likelihood of lost sales and improving conversion rates.
• Multi-Channel Notifications: Support for both email and SMS notifications, ensuring customers receive alerts in their preferred format. The app allows for batch and manual notifications, as well as real-time alerts for maximum flexibility.
• Customized Alert Templates: Merchants can tailor email and SMS templates to match their brand, making communications more engaging and on-brand.
• Comprehensive Waitlist Management: Track waitlists for out-of-stock products and manage unlimited back in stock requests, providing a clear pipeline of customer demand.
• Price Drop & Low Stock Warnings: The app doesn’t just notify about restocks—it also alerts customers to price drops and low inventory, helping drive urgency and additional sales.
• Bulk Export & Analytics: Export lists of interested customers and access detailed analytics and reports, allowing merchants to better understand demand trends and notification performance.
• Multi-Location & Inventory Controls: Merchants with multiple warehouses or locations benefit from inventory controls and the ability to manage notifications by location.
• Extensive Integrations: Deep integration with Shopify Admin, Klaviyo, Mailchimp, Dotmailer, and Transcy enables seamless marketing list sync, automated campaigns, and global reach.
• 30+ Languages Supported: With support for 30 languages including major European, Asian, and global languages, the app is ideal for merchants selling internationally and looking to offer localized experiences.

Pricing Breakdown:

• Free to Install: 50 email alerts/month, unlimited back in stock requests, automatic notifications, bulk export, and integrations—ideal for testing and small stores.
• Email Only ($10/month): Unlimited emails, batch notifications, multi-location support, inventory controls, and mailing list sync with Klaviyo & Mailchimp.
• Starter ($20/month): Adds 200 SMS notifications, automatic SMS token refill, analytics/reports, and optional SMS token purchases.
• Pro ($45/month): Unlimited email alerts, 500 SMS notifications, analytics, reports, emails from custom addresses, and full SMS feature access.

Pros:

• Comprehensive channel coverage (email & SMS), batch/manual notifications, and robust customization options.
• Unmatched language support (30+ languages) for global merchants.
• Seamless integration with top marketing tools (Klaviyo, Mailchimp, Dotmailer, Transcy).
• Powerful inventory management features and multi-location controls.
• Flexible, accessible pricing—free tier and affordable entry-level plans.
• Built for Shopify with a solid track record since 2016 and 157 reviews.

Cons:

• SMS notifications are limited to paid plans.
• Pricing for highest-volume SMS alerts may be higher for very large stores, depending on volume.

Verdict: SC Back in Stock Notify Me is a feature-rich, globally focused app that combines advanced notification capabilities, broad integration, and deep localization. It’s an excellent fit for Shopify merchants of any size—especially those with international audiences, multi-location inventories, or advanced marketing automation needs.

Preorder, Back in stock Duck

Overview: Preorder, Back in stock Duck by Peppyduck Ventures LLP enables merchants to create presales, backorders, and restock waitlists all in one solution. Its core use case is empowering stores to capture sales on out-of-stock items through preorders and efficiently notify customers when products are back in stock, supporting both D2C and B2B sales strategies.

Key Capabilities:

• Preorders and Backorders: The app makes it easy to enable unlimited preorders for products, allowing stores to capture revenue even when inventory is unavailable.
• Notify Me Waitlists: Customers can join waitlists for out-of-stock products and receive alerts when inventory is replenished, helping merchants recover sales automatically.
• Customizable Signup Forms and Buttons: Full customization of "Notify Me" buttons, signup forms, and emails ensures on-brand customer experiences.
• Variant-Specific Back in Stock Alerts: Shoppers can sign up for alerts at the variant level, ensuring precise targeting and communication.
• WhatsApp Business Integration: The app integrates with WhatsApp for business, supporting alerts over this channel in addition to email.
• 24/7 Human-Only Live Chat Support: Merchants have access to around-the-clock support, which can be valuable for troubleshooting and onboarding.

Pricing Breakdown:

• FREE: Unlimited preorders, 50 back in stock emails per month, customizable UI, and unlimited notify-me signups.
• ESSENTIALS ($9/month): 500 back in stock emails, all features included, grow mailing lists with Shopify and Klaviyo, preorder discounts, and language/location support.
• PRO ($29/month): 3,000 back in stock emails, all integrations (including WhatsApp, API), and enhanced WhatsApp alerts.
• ELITE ($89/month): Unlimited back in stock alerts, dedicated Customer Success Manager, and all features/integrations included.

Pros:

• Unlimited preorders on all plans with no transaction fees.
• Variant-specific notifications and customizable UI for tailored customer experience.
• WhatsApp integration for multi-channel communication.
• 24/7 human-only live chat support for reliable help.
• Built for Shopify and strong review volume (480 reviews since 2023).

Cons:

• Only supports English, limiting appeal for non-English speaking audiences.
• Back in stock emails are capped on lower plans, with unlimited only on the highest tier.

Verdict: Preorder, Back in stock Duck is best suited to English-speaking stores that prioritize unlimited preorders, variant-level notifications, and WhatsApp communication. Its support and integrations are strong, but global brands may find the language coverage lacking.

Notify Me! Back in Stock Alert

Overview: Notify Me! Back in Stock Alert by Notify Me! is an all-in-one solution for waitlists, preorders, wishlists, and low stock management. The app helps merchants drive conversions by keeping customers engaged throughout the product lifecycle—whether they’re waiting for restocks, preordering new releases, or tracking products in their wishlist.

Key Capabilities:

• Waitlists and Back in Stock Alerts: Automates email, push, and SMS alerts to notify customers the moment inventory is replenished, minimizing lost sales.
• Preorders and Wishlist Management: The app supports preorders, allowing customers to reserve out-of-stock items, and lets shoppers create wishlists for products they’re interested in, increasing engagement and future sales opportunities.
• Low Stock Widgets and Badges: Merchants can display low stock widgets and badges, driving urgency and encouraging quicker purchase decisions.
• Deep Customization: Widgets and emails can be fully customized to match the store’s look and feel, ensuring seamless branding.
• Integrated Reports: In-app reporting and insights help merchants analyze demand and optimize restock strategies.
• Multiple Notification Channels: Automated alerts via email, SMS, and push notifications cover a wide range of customer preferences.
• Broad Integration Stack: Integrates with Checkout, Shopify POS, Klaviyo, Mailchimp, Omnisend, PageFly, PushOwl, and Sidekick, supporting advanced marketing automation and omnichannel workflows.
• 13 Languages Supported: Includes major European and Asian languages, supporting a more global customer base.

Pricing Breakdown:

• Lite (Free): Automated alerts (email, push, SMS), 10 restock notifications, 5 preorders, 50 wishlist actions, and development store access to all features.
• Kickstart ($9.90/month): 500 preorders, 500 alerts (email, SMS, push), 2,000 wishlist actions, and full widget/email customization.
• Starter ($19.90/month): All Kickstart features plus advanced customization, preorder fulfillment triggers, and fundamental reporting.
• Standard ($39.90/month): 1,500 alerts, priority support, 10,000 wishlist actions, and unlimited plans available inside the app.

Pros:

• Extremely broad integration capabilities for marketing and POS workflows.
• Supports multiple notification channels (email, SMS, push).
• 13 language options for international stores.
• Powerful wishlist and preorder management alongside stock alerts.

Cons:

• Notification and wishlist volumes are capped on lower plans.
• Unlimited plans require contacting support or upgrading beyond listed tiers.

Verdict: Notify Me! Back in Stock Alert is ideal for merchants seeking a highly integrated, multi-channel alert system with advanced preorder and wishlist features. Its language coverage and integrations make it a solid choice for mid-to-large stores with international reach.

Amp Back in Stock & Preorder +

Overview: Amp Back in Stock & Preorder + by HEL SG PTE LTD provides robust back in stock alerts, preorders, wishlists, and low stock badges. With a focus on instant notifications and automation, the app helps merchants recapture buyers as soon as inventory is updated.

Key Capabilities:

• Instant Restock Alerts: Send automated email, SMS, and push notifications as soon as products are restocked, improving the likelihood of converting waiting customers.
• Unlimited Preorders: Merchants can enable unlimited preorders on paid plans, capturing revenue before inventory arrives.
• Wishlists and Low Stock Badges: Customers can add products to wishlists and see low stock badges, driving urgency and future engagement.
• Follow-Up Notifications: The app delivers follow-up notifications to ensure maximum reach and conversion.
• Customizable UI & Reports: Merchants can tailor buttons, forms, and access activity reports for data-driven decision-making.
• Integration with Marketing Platforms: Connects with Shopify Flow, Klaviyo, MailChimp, and Zapier to automate workflows and synchronize data across platforms.

Pricing Breakdown:

• Free: 10 notifications/month, unlimited registrations, wishlists, low stock badges, and activity reports.
• Starter ($19/month): 500 notifications/month, unlimited preorders, SMS notifications, customizable UI, and reports.
• Growth ($49/month): 2,000 notifications/month, unlimited preorders, SMS, Klaviyo & Mailchimp integration, custom domain support, and delivery policy customization.
• Pro ($99/month): Unlimited notifications, unlimited preorders, API/webhook access, and advanced customization options.

Pros:

• Unlimited preorders on all paid plans.
• Multi-channel instant alerts (email, SMS, push).
• Integrates with Shopify Flow and major marketing platforms.
• Comprehensive customization and reporting features.

Cons:

• Only supports English, limiting localization for global brands.
• Higher pricing for unlimited notifications.

Verdict: Amp Back in Stock & Preorder + is a strong choice for English-speaking merchants who need instant, multi-channel notifications and value deep automation with Shopify Flow or Zapier. Its unlimited preorder support and comprehensive reporting benefit stores with high inventory turnover and proactive marketing teams.

PreOrder Now Back in Stock WOD

Overview: PreOrder Now Back in Stock WOD by Website on Demand Studio, LLC is focused on helping merchants capture sales through preorders and back in stock alerts. With a particular emphasis on flexible payment and preorder management, it is designed for stores that want to offer customers the option to reserve upcoming inventory while automating notifications.

Key Capabilities:

• Preorder Management: Merchants can publish unlimited preorder products (on paid plans), display preorder badges, offer preorder discounts, and accept flexible partial payments.
• Dynamic Mixed Cart Alerts: The app provides alerts when carts contain a mix of preorder and in-stock items, helping set customer expectations.
• Customizable Quickview & Badges: Preorder badges can be shown on collection pages and within quickview pop-ups, improving visibility for preorder-eligible products.
• Automatic Shipping Update Emails: The app sends customers updates when preorder statuses change, keeping them informed post-purchase.
• Integration Stack: Works with Shopify Admin, Google Analytics, In Cart Upsell, PageFly, Product Customizer, and Trackify X, supporting a range of marketing, upsell, and tracking needs.

Pricing Breakdown:

• Free Plan: 1 free preorder product, dynamic mixed cart alerts, and fast email support.
• Shopify Basic ($19.95/month): Unlimited preorder products, badges, discounts, flexible payments, instant live support, and limited to Shopify Basic stores.
• Shopify Grow ($39.95/month): All features for Shopify Grow/Standard stores.
• Shopify Advanced ($59.95/month): Unlimited preorder products, all features, dedicated success manager, and exclusive to Shopify Advanced stores.

Pros:

• Unlimited preorders and advanced preorder features on paid plans.
• Flexible partial payment options for customers.
• Dedicated support for higher Shopify plan tiers.
• Integration with analytics and upsell tools.

Cons:

• Supports only English, limiting global use.
• Back in stock notification features are less extensive than some competitors.
• Advanced features are tied to Shopify plan level, potentially increasing costs for some merchants.

Verdict: PreOrder Now Back in Stock WOD is a solid fit for stores that prioritize advanced preorder workflows and flexible payments, especially those on higher Shopify plans. Its integration with analytics and upselling tools is a plus, but language and feature scope may limit appeal for some global or notification-focused merchants.

Buyer’s Guide: How to Evaluate Shopify Stock Alert Apps

1. Multi-Channel Notification Capabilities

Consider whether the app offers notifications via email, SMS, push, and even WhatsApp. Multi-channel capability ensures you meet customers where they are and recover more sales. Apps like SC Back in Stock Notify Me and Notify Me! Back in Stock Alert provide both email and SMS alerts, while others like Preorder, Back in stock Duck add WhatsApp for broader reach.

2. Language and Localization Support

If you sell internationally or plan to, language support is critical. An app with wide language coverage, like SC Back in Stock Notify Me (30+ languages), enables you to deliver notifications and signup flows in your customers’ native languages, supporting higher conversion rates and a better customer experience. Apps limited to English may restrict your global potential.

3. Integration with Marketing and Workflow Tools

Stock alert apps that integrate with your marketing stack allow you to centralize customer data and trigger more personalized campaigns. Look for integrations with Klaviyo, Mailchimp, Shopify Admin, and other platforms you rely on. SC Back in Stock Notify Me, Notify Me! Back in Stock Alert, and Amp Back in Stock & Preorder + offer extensive integration options that streamline workflows and maximize marketing effectiveness.

4. Scalability and Pricing Flexibility

Evaluate whether the app’s pricing and feature tiers match your current needs and leave room for growth. Free plans are great for new or small stores, but as your volume grows, you’ll want to ensure you can access higher notification limits, advanced analytics, or additional channels without unnecessary cost jumps. Consider the inclusions and caps on each tier, and how they align with your projected order volume and site traffic.

Final Recommendation

Choosing the best Shopify stock alert app depends on your audience, store size, and notification needs.

• If you need broad language support, robust automation, and deep integrations—and you want pricing flexibility with powerful inventory features—SC Back in Stock Notify Me is the top choice.
• If unlimited preorders or WhatsApp alerts are your priority, Preorder, Back in stock Duck is a strong fit, especially for English-speaking stores.
• If you want a highly integrated solution with wishlists and push notifications, Notify Me! Back in Stock Alert offers excellent value for larger, international merchants.
• If instant, multi-channel notifications and Shopify Flow integration matter most, consider Amp Back in Stock & Preorder +.
• If your business is focused on preorder management and flexible payment options, PreOrder Now Back in Stock WOD is worth a look.

For most merchants—especially those with international ambitions, multi-channel marketing needs, and a desire for maximum automation—SC Back in Stock Notify Me stands out as the best all-around choice in 2026. Install SC Back in Stock Notify Me from the Shopify App Store today and start recovering more sales from your out-of-stock products.