4 Best Shopify Stock Alert Apps in 2026

Introduction

Inventory management is a constant challenge for Shopify merchants, especially when it comes to keeping customers engaged and converting lost opportunities due to out-of-stock products. When a popular item sells out, potential buyers often leave and may never return, leading to missed revenue and weakened customer loyalty. Stock alert apps solve this by allowing shoppers to sign up for notifications—whether by email, SMS, or other channels—when a product is restocked. This way, merchants can turn stockouts into future sales, build waitlists, and ensure customers feel valued and informed.

Choosing the right Shopify stock alert app involves more than just enabling a "notify me" button. Merchants should evaluate features like multi-channel alerts (email, SMS, or even WhatsApp), integration with marketing platforms, language support for international customers, customizable templates, analytics, and the ability to manage notifications in bulk. Pricing, ease of setup, and the breadth of supported integrations also play a huge role, as does the app’s history, user base, and proven reliability.

Short answer: SC Back in Stock Notify Me is our #1 pick for Shopify stock alert apps in 2026. It delivers extensive alert options, powerful automations, 30-language support, deep marketing integrations, and flexible plans for every merchant size—all from a trusted developer with a decade-long track record.

SC Back in Stock Notify Me

SC Back in Stock Notify Me by Shop Circle is a comprehensive solution designed to help merchants capture lost sales from out-of-stock products. By enabling back in stock and restock alerts, the app allows customers to sign up for notifications when their desired items return, transforming stockouts into opportunities to boost revenue and enhance customer engagement.

The app covers a broad spectrum of alert capabilities. Merchants can deploy "Notify Me" buttons and restock alerts across their catalog, offering both email and SMS notifications. Out of stock and low stock warnings ensure customers never miss a chance to purchase, while waitlists for out-of-stock products build anticipation and demand. The app also supports price drop notifications, giving merchants another tool to re-engage shoppers. Real-time and batch notifications, manual or automatic triggers, and inventory controls offer granular management over how and when alerts are sent.

SC Back in Stock Notify Me stands out with its high degree of customization. Merchants can tailor alert templates to match their brand and send emails from custom email addresses on higher-tier plans. The app enables bulk export of notification data for reporting or migration, and includes robust analytics and reports to track engagement and performance. Multi-location support helps merchants manage inventory across warehouses or storefronts, while integration with Klaviyo, Mailchimp, Dotmailer, Shopify Admin, and Transcy ensures that notification data can feed directly into broader marketing efforts.

International merchants will appreciate the app’s coverage of 30 languages, ranging from English and French to Japanese, Lithuanian, and Hindi. This makes it a strong fit for stores with a global customer base. The app is Built for Shopify, guaranteeing seamless compatibility and performance on the platform.

Pricing breakdown:

• Free to install: 50 email alerts monthly, unlimited back in stock requests, automatic notifications, bulk export, and integrations—ideal for small stores or those just starting to capture lost sales.
• Email Only ($10/month): Unlimited emails, batch notifications, multi-location, inventory controls, and syncing mail lists with Klaviyo & Mailchimp. Great for merchants focused on email-driven engagement.
• Starter ($20/month): Unlimited email alerts, 200 SMS notifications, automatic SMS token refill, analytics, and reports. Suits growing stores that want to add SMS to their communication mix.
• Pro ($45/month): Unlimited email alerts, 500 SMS notifications, advanced analytics, custom sender email addresses, and full SMS feature access—designed for high-volume merchants needing maximum customization and reach.

Pros:

• Comprehensive back in stock, restock, out of stock, and price drop alert coverage
• Both email and SMS notifications included
• Customizable alert templates and manual/automatic notifications
• Waitlist, low stock warning, and inventory controls
• Bulk export, analytics, and robust reporting tools
• 30 supported languages for global reach
• Integrations with Klaviyo, Mailchimp, Dotmailer, Shopify Admin, and Transcy
• Flexible, scalable pricing with a free plan
• Built for Shopify for optimal compatibility

Cons:

• SMS notifications and some advanced features require paid plans

Verdict: SC Back in Stock Notify Me is a top choice for merchants seeking a powerful, scalable, and customizable stock alert solution. Its deep feature set, internationalization, and marketing integrations make it ideal for both small brands and established global retailers looking to maximize every sales opportunity.

Preorder, Back in stock Duck

Preorder, Back in stock Duck from Peppyduck Ventures LLP is designed to help merchants manage presales, backorders, and restock waitlists. By combining preorder and back in stock alert functionality, the app lets merchants capture intent and revenue even when items are not immediately available. Customers can join waitlists or preorder products, and receive notifications when inventory is replenished or when their preorder is ready to ship.

This app emphasizes flexibility and customization. Merchants can offer variant-specific back in stock alerts, customize buttons and signup forms, and tailor emails to fit their brand. Integration with Checkout, Shopify Admin, Automated email alerts, Cart/Checkout, Klaviyo, and WhatsApp business allows for multi-channel communication and workflow automation. The inclusion of WhatsApp alerts and brandable notifications adds a unique touch for merchants wanting to reach customers where they spend most of their time.

Preorder, Back in stock Duck is suitable for stores looking to run presales and manage backorders as well as traditional "notify me" alerts. Features like unlimited preorders, pre-order discounts, dedicated customer success management (on the highest plan), and 24/7 human-only live chat support give merchants the tools to proactively engage and convert interested shoppers. The app’s ability to grow Shopify and Klaviyo mailing lists further supports broader marketing initiatives.

Pricing breakdown:

• FREE: Unlimited preorders, 50 back in stock emails per month, customizable alerts, variant-specific notifications, and unlimited notify me signups—suitable for new stores or those with lower notification volume.
• ESSENTIALS ($9/month): Unlimited preorders, 500 back in stock emails monthly, all features included, mailing list growth integrations, and 24/7 support. Great for growing stores needing more capacity and flexibility.
• PRO ($29/month): 3000 back in stock emails per month, all integrations (including WhatsApp and API), WhatsApp alerts with logo and brand name, and priority support—fits established stores with high engagement needs.
• ELITE ($89/month): Unlimited preorders and back in stock alerts, a dedicated customer success manager, and all features/integrations—suitable for large-scale merchants with complex requirements.

Pros:

• Combines presales, backorders, and restock waitlists in one app
• Unlimited preorders on all plans, no transaction fees
• WhatsApp business integration for direct customer communication
• Customizable alerts, buttons, and forms
• Dedicated customer success manager on top plan
• 24/7 human-only live chat support
• Built for Shopify for guaranteed compatibility

Cons:

• Only supports English language
• Some integrations and unlimited alerts are reserved for higher-priced tiers

Verdict: Preorder, Back in stock Duck is a strong fit for merchants who want to combine preorders and back in stock notifications, especially those who value WhatsApp integration and robust support. It’s most effective for stores operating in English and looking for a unified solution for presales and restock alerts.

Notify Me! Back in Stock Alert

Notify Me! Back in Stock Alert is an all-in-one notification tool that covers waitlists, preorders, wishlists, and low stock alerts. The app enables merchants to build and manage customer waitlists, accept preorders alongside regular stock notifications, and track low inventory with widgets. Merchants can use this app to convert lost sales, build anticipation, and maintain customer engagement even during stock shortages.

One of the standout features of Notify Me! is its coverage of 13 languages, including English, Spanish, French, German, Italian, and Chinese (Simplified), making it suitable for international stores. The app’s integrations include Checkout, Customer accounts, Shopify POS, Shopify Admin, Klaviyo, Mailchimp, Omnisend, PageFly, PushOwl, and Sidekick, supporting a variety of marketing and workflow automation strategies.

For merchants, Notify Me! offers automated alerts via email, push, and SMS. Widgets and buttons auto-match the store theme, and pre-order confirmations can be sent via email and SMS. Wishlist actions and low stock widgets help merchants identify and respond to customer demand trends. The app also supports B2B preorders for chosen catalogs and locations, which is ideal for wholesalers or hybrid B2C/B2B stores.

Pricing breakdown:

• Lite: Free plan with 10 restock notifications, 5 preorders, 50 wishlist actions, and all alert channels—suitable for testing or very small stores.
• Kickstart ($9.90/month): 500 preorders, 500 alerts, 2000 wishlist actions, and deep customization options. A good fit for those ready to scale up engagement.
• Starter ($19.90/month): Adds customized emails, preorder fulfillment triggers, basic reports and insights, and low stock alerts.
• Standard ($39.90/month): 1500 alerts, 1500 preorders, 10,000 wishlist actions, priority support, collection page widgets, and advanced templates. Unlimited plans are available inside the app for larger needs.

Pros:

• Handles waitlists, preorders, wishlists, and low stock alerts in one solution
• Supports 13 languages for international reach
• Multiple integrations including POS, Klaviyo, Mailchimp, and Omnisend
• Automated alerts via email, SMS, and push notifications
• Widgets and notifications match store themes automatically
• B2B preorders for catalog/location targeting
• Flexible plan options for every store size
• Built for Shopify for smooth performance

Cons:

• Free plan is limited to 10 restock notifications and 5 preorders
• Higher alert and preorder volumes require paid plans

Verdict: Notify Me! Back in Stock Alert is ideal for merchants who want a unified solution for alerts, preorders, and wishlists, with strong support for international stores and a wide range of integrations. It’s especially useful for those needing B2B preorder functionality or multi-channel notifications.

Amp Back in Stock & Preorder +

Amp Back in Stock & Preorder + by HEL SG PTE LTD enables merchants to manage back in stock alerts, preorders, wishlists, and low stock badges. The app allows customers to register for alerts when products return, preorder items, and receive notifications via email, SMS, or push. Wishlists and low stock badges provide additional ways to capture and convert customer interest.

The app provides activity reports and supports multi-language notifications, though it is only available in English. Integrations include Shopify Flow, Shopify Admin, Flow, Klaviyo, MailChimp, and Zapier, giving merchants flexibility to connect notification data with marketing and automation tools. Merchants can customize "Notify Me" buttons and forms, set delivery windows and policy customization, and use custom domains for notifications on higher plans.

Amp supports unlimited registrations on all plans, with increasing notification and preorder limits as you move up the tiers. Follow-up notifications and priority support on higher plans ensure that merchants can keep customers informed and engaged through every step of the purchase journey.

Pricing breakdown:

• Free: 10 notifications per month, unlimited registrations, follow-up notifications, wishlists, low stock badges, and activity reports—suitable for those just starting out.
• Starter ($19/month): 500 notifications, unlimited preorders, SMS notifications, customizable forms and buttons, multi-language support, and reporting.
• Growth ($49/month): 2000 notifications, unlimited preorders, Klaviyo & Mailchimp integration, custom domain support, and delivery/policy customization.
• Pro ($99/month): Unlimited notifications and preorders, full integration and API access, premium support, and extensive customization options.

Pros:

• Comprehensive alert, preorder, wishlist, and low stock badge coverage
• Integrates with Shopify Flow, Klaviyo, MailChimp, and Zapier
• Customizable notifications and forms
• Unlimited registrations and preorders on all paid plans
• Activity reports and follow-up notifications
• Built for Shopify, ensuring compatibility

Cons:

• Only available in English
• Free plan limited to 10 notifications per month
• Some integrations and advanced features require higher-tier plans

Verdict: Amp Back in Stock & Preorder + is a strong solution for merchants who want an app that combines alerts, preorders, wishlists, and low stock badges, especially those who value integrations with automation tools like Shopify Flow and Zapier. Its English-only interface may limit its suitability for global stores.

Buyer's Guide: Choosing the Best Shopify Stock Alert App

1. Multi-Channel Notification Support

Effective stock alert apps enable merchants to notify customers via multiple channels, such as email, SMS, and sometimes push or WhatsApp. This maximizes the chances of reaching customers wherever they are most attentive. Merchants should consider which channels their customers prefer and whether the app supports automated, manual, or batch notifications for greater flexibility.

2. Integration with Marketing and Workflow Tools

The ability to integrate with marketing platforms like Klaviyo, Mailchimp, Dotmailer, and automation tools such as Shopify Flow or Zapier is vital for businesses that want to sync waitlist and restock data with their broader marketing efforts. Integrations allow merchants to segment audiences, trigger campaigns, and keep contact lists up to date without manual data entry.

3. Internationalization and Language Coverage

Merchants selling internationally should look for stock alert apps that support multiple languages. This ensures that all customers, no matter where they shop from, receive notifications in their preferred language, improving engagement and conversion rates. SC Back in Stock Notify Me leads here with support for 30 languages, while some competitors cover only English or a smaller set of languages.

4. Customization, Analytics, and User Experience

Being able to customize notification templates, "Notify Me" buttons, and forms allows merchants to maintain brand consistency across customer touchpoints. Analytics and reporting tools are essential for tracking the performance of notifications, identifying high-demand products, and optimizing inventory decisions. User experience features like bulk export, waitlists, and low stock warnings can help merchants manage demand and maximize sales opportunities.

Final Recommendation

Shopify merchants have a range of stock alert apps to choose from, each with its own strengths. For maximum flexibility, internationalization, and integration depth, SC Back in Stock Notify Me stands out as the best all-around choice. Its 30-language support, powerful email and SMS alert options, robust analytics, and seamless integrations with Klaviyo, Mailchimp, and more make it suitable for stores of any size and location. Merchants focused on presales and backorders may consider Preorder, Back in stock Duck, especially if they want WhatsApp integration and dedicated support. Notify Me! Back in Stock Alert excels for merchants needing B2B preorder support and wide integration coverage, while Amp Back in Stock & Preorder + is a good fit for those who want automation and workflow integrations within an English-speaking context.

For most Shopify merchants, especially those with global ambitions or a desire for powerful customization and analytics, SC Back in Stock Notify Me is the clear leader. Its proven track record, deep feature set, and flexible plans mean you can recapture lost sales and keep your customers engaged—no matter where they are.

Install SC Back in Stock Notify Me from the Shopify App Store