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Best Stock alerts Shopify apps in 2027 [Updated]
PickYourApp Review Team
6 min read
•
Sep 09, 2026
The Best Shopify stock alert apps help merchants manage inventory effectively while maximizing sales opportunities. From low stock counters and product labels that create urgency to back-in-stock notifications and preorder systems, these tools ensure you never miss a sale due to inventory issues. Whether you need automated stock level badges, waitlist management for out-of-stock items, or preorder capabilities with partial payments, these apps provide essential features to keep customers informed and engaged throughout their shopping journey.
| Name | Rate on Shopify | Price | Free trial | Key features |
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#1. Notify Customers with Restock Alert when items are back in stock & make out-of-stock waitlist
Never miss a sale with Kbite's comprehensive back in stock notification system. When items are out of stock, customers can click the "Notify Me" button to join the waitlist and receive automatic restock alerts via email or SMS. Track product demand through detailed waitlist analytics and grow your marketing list simultaneously. The app also sends price drop notifications to alert customers about sales. Customize notification templates, button appearance, and automated messages to match your brand. Perfect for managing out-of-stock products, recovering potential sales, and keeping customers informed when items become available again. Seamlessly integrate customer data with your email marketing for better engagement and increased sales conversion. -
#2. Sell preorder & backorders with partial payments. Send Back in stock alerts on restock to waitlists!
STOQ helps you manage out-of-stock products with two key features: preorders and back-in-stock notifications. Set up preorder buttons to accept deposits or partial payments for upcoming inventory, or create waitlists with "Notify Me" buttons for restocks. When items return to stock, automatic email and SMS alerts go out to interested customers. The app works across multiple store locations and markets, syncs with Klaviyo for email marketing, and provides detailed analytics. Customize button designs, alert messages, and payment options to match your brand. Get 24/7 support to help maximize preorder revenue and turn out-of-stock disappointments into future sales. Perfect for presales, backorders, and building customer waitlists while growing your mailing list. -
#3. Do Preorders on Deposit or Backorders with Waitlists, Restock Alerts or Back in Stock Notifications
Preorder Now lets you manage presales, backorders, and waitlists to keep selling even when products are out of stock. Set up preorder buttons with partial payments and split payment options on product pages. Send back in stock notifications and restock alerts to customers who want updates on sold out items. The app works for both D2C and B2B preorders. Add preorder badges, coming soon tags, and notify me buttons to product pages. Set automatic discounts, presale order limits, and shipping dates. Use the countdown timer to create hype for new product launches and product drops. Capture email addresses through waitlists and send automated pre order emails when inventory restocks. The inventory manager turns pre orders on or off based on stock levels. Features include order tagging, customizable pre-order badges, and restock alerts. Guided video call setup available with email and chat support for preorder manager configuration. -
#4. Notify Me! for back in stock alert, backorder, out of stock waiting list, low stock alert & wishlist
Notify Me! helps you manage out of stock products with back in stock alerts sent automatically via email, SMS, and push notifications. Add "Notify Me," "PreOrder," or "Wishlist" buttons to product, collection, and home pages to capture customer interest when items are unavailable. Accept pre-orders for D2C and B2B customers with options for discounts, notes, and partial payments. The low stock alert feature displays an "only X left" counter to create urgency and drive conversions. Wishlist functionality lets shoppers save items and return later, improving engagement and recovery rates. The app includes inventory forecasting with low stock alerts, multilingual support, automated restock notifications, and integrates with your existing tools to create custom backorder workflows. Guest wishlist works across all pages with customer account extensions. GDPR compliant with API access for AI agents and MCP integration with Sidekick. -
#5. Sell preorders & backorders with full/partial payments. Auto send back-in-stock & coming soon alerts
REZ helps you sell preorders and backorders for out-of-stock products so you never miss a sale. Set up pre-order and presale options with full or partial payments and deposits to generate revenue early. The app automatically sends back-in-stock alerts and coming soon notifications to customers on your waitlist when products are restocked. Add a notify me button to let shoppers request interest in unavailable items. Manage backorders easily with built-in analytics to track demand, forecast inventory, and measure revenue. Quick onboarding support gets preorder manager running in minutes. Accept pre-orders with flexible payment options and encourage sales with deposits or discounts. REZ's conversion analytics help you understand customer demand while the automated notification system keeps your waitlist engaged. Install today with 24/7 support to start capturing sales on out-of-stock products. -
#6. Run pre-orders & presale with deposits, partial payments. Notify me waitlist + restock alerts
This app lets you run pre-orders, presales, and back in stock campaigns for out of stock, coming soon, and made to order products. Set up partial payments with deposits, split payment schedules, and deferred payment options. Customers can choose to pay in full or use payment schedules with due dates. Add a customizable preorder widget, Preorder Now button, and Notify me form to product pages, collections, search results, and Quick Buy. Send automatic back in stock email notifications and restock alerts to your waitlist when sold out items return. The app prevents mixed carts, displays preorder badges, and supports Shopify Markets and B2B preorder flows. Control inventory and fulfillment rules for backorders. Free plan includes 300 back in stock notifications per month with 24/7 support. -
#7. Powerful solution for: pre-order, restock alert, coming soon, presale, backorders
This pre-order and back-in-stock solution helps you manage product presales and restock notifications effectively. Set up pre-orders automatically based on inventory levels or schedule them with custom start/end dates. The app adds helpful order tags like "preorder" and "shipping date" while sending confirmation emails to buyers. Customers can subscribe to receive back-in-stock alerts when sold-out items become available again. Features include partial payment options, customizable delivery notes, automatic discounts on pre-orders, and a "Notify Me" button for out-of-stock products. The app makes it simple to handle backorders and recover potential lost sales by keeping customers informed about product availability. -
#8. Capture sales with Back in Stock alerts, Preorders, Wishlists & Low Stocks. Trusted since 2011.
Trusted by 25,000+ brands since 2011, this app helps you capture lost sales from out-of-stock products. Send automatic back in stock alerts via email, SMS, and push notifications to notify shoppers the moment items return. Enable preorders to pre-sell collections and collect payment before inventory arrives. Add wishlists so customers can save products they want, and display low stock badges to create urgency. Replace "Out of Stock" with fully branded Notify Me and Preorder buttons that match your store's look—no coding required. Get demand insights to know exactly what to restock and when. Perfect for high-SKU catalogs looking to recapture buyers and improve cash flow fast. -
#9. Grow sales with pre-order, backorder. Add out of stock waitlists with 'notify me' & restock alerts.
Never miss a sale opportunity with this easy-to-use pre-order and back in stock management app. Set up pre-orders to capture sales even when products are temporarily out of stock, and create waitlists with a simple "Notify Me" button for sold-out items. The app automatically sends restock alerts to interested customers when products become available again. Working at the variant level, you can manage backorders, presales, and stock notifications for specific product options. Get started in minutes with help from our 24/7 live chat support team who are ready to assist you every step of the way. -
#10. Ordersify with restock alerts, out-of-stock reports, low-stock alerts
Ordersify helps you manage inventory and keep customers informed with automated restock notifications. When items come back in stock, customers receive branded emails through your domain. The app provides detailed low-stock and out-of-stock reports, while displaying inventory status badges on product pages. Customers can see real-time stock levels through a convenient low-stock bar. Supporting multiple warehouse locations and available in 10+ languages including English, Chinese, German, Japanese, and Italian, Ordersify makes inventory management simpler. Get instant alerts for low stock items and daily notifications when products are restocked, ensuring you stay on top of your inventory while keeping customers in the loop.