Description
CartEngine Back in Stock Alerts for WooCommerce helps recover sales from out-of-stock products. Instead of losing customers forever, let them subscribe with one click and automatically email them when you restock.
No complicated setup. No bloat. Just a clean “Notify Me” form, reliable email delivery, and a simple subscriber dashboard right inside WooCommerce.
How It Works
- A visitor lands on an out-of-stock product page
- They enter their email and click “Notify Me When Available”
- You restock the product (manually or via import)
- The plugin automatically sends a back-in-stock email to all subscribers
- The customer clicks the link and completes their purchase
Key Features
Back-in-Stock Notifications
Automatically triggered when product stock status changes to “in stock” — no manual work needed. Emails are sent in batches of 50 with configurable throttle to protect your server.
AJAX Subscription Form
The “Notify Me” form submits without a page reload. Displays directly on the product page — no extra pages, no popups, no friction.
Variable Product Support
Customers can subscribe to specific variations (size, color, etc.). When you restock a particular variation, only subscribers to that variation receive the notification.
Shortcode [safw_stock_alert]
Place the subscription form anywhere using the [safw_stock_alert] shortcode. Supports product_id and variation_id attributes for full flexibility.
Subscriber Management
View and manage all subscribers from WooCommerce Stock Alert Subscribers. Filter by status (active, notified, unsubscribed), sort by date or email.
Spam & Abuse Protection
Built-in IP-based rate limiting (5 subscriptions per IP per hour) keeps your list clean without any configuration.
Unsubscribe Link in Every Email
Every notification email includes a one-click unsubscribe link. No account required. GDPR-friendly by design.
Customizable Email & Form
Configure button text, form label, email subject, sender name, and accent color directly in WooCommerce Settings Stock Alerts.
Social Proof Counter
Optionally show how many people are waiting for a product (“12 people are waiting for this item”). Creates urgency and encourages subscriptions.
GDPR & Privacy Ready
Integrates with WordPress’s built-in Personal Data Export and Erase tools. Subscriber data stays on your server — no third-party services.
Why Choose CartEngine Back in Stock Alerts for WooCommerce?
- Lightweight — zero dependencies, no jQuery plugins, no external scripts
- WooCommerce-native — settings live inside WooCommerce, not a separate menu
- Works with any theme — block themes (Twenty Twenty-Five) and classic themes
- Developer-friendly — hooks and filters to customize behavior
Upgrade to Stock Alert Pro
Stock Alert Pro extends the free plugin with powerful conversion tools:
- 📊 Demand Analytics Dashboard — see which products generate the most waitlist demand
- 🎯 Smart Stock-Limited Notify — alert subscribers only when stock covers their demand
- 💬 Popup/Modal Mode — capture emails with a lightbox form instead of inline
- ✉️ Multiple Email Templates — choose from several professionally designed templates
- 📈 Conversion Tracking — measure how many subscribers actually purchase
- 📤 CSV Export — download your subscriber list for any use
- 🔐 Double Opt-In — confirm subscriptions for cleaner lists and full GDPR compliance
- 🔔 Admin Digest Emails — daily/weekly summary of new subscriptions and conversions
Screenshots
“Notify Me” subscription form on a product page 
Back-in-stock email notification received by customer 
Subscriber list in WooCommerce admin
Installation
- In your WordPress admin, go to Plugins Add New
- Search for CartEngine Back in Stock Alerts for WooCommerce and click Install Now
- Click Activate
- Go to WooCommerce Settings Stock Alerts to configure your form and email settings
- The subscription form will automatically appear on all out-of-stock product pages
Manual Installation:
1. Download the plugin ZIP file
2. Upload via Plugins Add New Upload Plugin
3. Activate and configure as above
FAQ
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Does it work with variable products?
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Yes. When a customer selects an out-of-stock variation, the subscription form appears for that specific variation. When you restock that variation, only its subscribers receive the notification.
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Will it slow down my store?
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No. The plugin adds minimal overhead. The subscription form is loaded via AJAX, and notification emails are sent via WP-Cron in batches — not on page load.
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Does it work with block themes like Twenty Twenty-Five?
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Yes, fully compatible with block themes and classic themes. The form output is plain HTML with minimal inline styles.
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How are emails sent — via my host or a third-party service?
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Emails are sent via WordPress’s built-in
wp_mail()function, which uses your hosting’s mail server by default. You can route through any SMTP plugin (WP Mail SMTP, FluentSMTP, etc.) for better deliverability. -
Is it GDPR compliant?
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Yes. Every notification email contains a one-click unsubscribe link. The plugin also integrates with WordPress’s Personal Data Export and Erase tools (Tools Export Personal Data / Erase Personal Data).
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Where can I manage subscribers?
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Go to WooCommerce Stock Alert Subscribers to view, filter, and delete subscriber records.
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Can I use it with a shortcode?
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Yes. Use
[safw_stock_alert]to embed the form anywhere. You can passproduct_idandvariation_idattributes to target a specific product. -
What happens if the same email subscribes twice to the same product?
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The subscriber receives a message that they are already on the waitlist. If they had previously unsubscribed or been notified, their subscription is automatically reactivated.
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Is there a limit to the number of subscribers?
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No limit. Subscriber data is stored in your WordPress database. Notifications are sent in batches of 50 with a configurable throttle interval.
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Is there a Pro version?
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Yes. Stock Alert Pro adds demand analytics dashboard, smart stock-limited notify (FIFO queue), popup/modal mode, multiple email templates, conversion tracking, CSV export, double opt-in, and admin digest emails. One-time purchase, no subscription.
Reviews
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Contributors & Developers
“CartEngine Back in Stock Alerts for WooCommerce” is open source software. The following people have contributed to this plugin.
Contributors
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Interested in development?
Browse the code, check out the SVN repository, or subscribe to the development log by RSS.
Changelog
1.0.0
- Initial release