HuntBee
  • Search
  • Product Stock Notification Alert
Product Stock Notification Alert

Product Stock Notification Alert for OpenCart helps store owners recover lost sales by allowing customers to subscribe for notifications when out-of-stock products become available again.

When a product is unavailable, the default Add to Cart button is replaced with a Notify Me option. Customers can submit their email and receive automatic notifications once the product is restocked.

The extension supports product-level and option-level alerts, ensuring accurate notifications even for configurable products such as size, color, or other variations.

Built-in automation, analytics, and customer self-service tools make this a complete solution for managing demand and improving conversion rates in your OpenCart store.

Problem Statement

Customers often leave an OpenCart store when they see a product is out of stock. Without a notification system, these potential buyers may never return, resulting in lost sales and missed revenue opportunities.

Store owners also lack visibility into which products customers are actively waiting for, making it difficult to plan inventory effectively.

This extension solves the problem by allowing customers to subscribe for stock alerts and automatically notifying them when the product becomes available again, bringing interested buyers back to complete their purchase.

Who Is This Extension For?

This OpenCart extension is ideal for:

  • Stores with frequently changing inventory
  • Stores selling popular or fast-moving products
  • Stores offering configurable products with options
  • Stores selling seasonal or limited stock items
  • Dropshipping businesses managing supplier stock availability
  • Stores wanting to improve customer retention
  • Stores wanting better demand forecasting insights

Key Benefits

  • Recover lost sales from out-of-stock products
  • Increase customer return rate
  • Improve conversion rates
  • Understand product demand trends
  • Improve inventory planning decisions
  • Automate customer notifications
  • Enhance shopping experience
  • Reduce customer frustration
  • Build customer engagement automatically
  • Identify high-demand products easily

Purpose of the Extension

The purpose of this OpenCart extension is to help store owners capture customer interest even when products are unavailable.

Instead of losing potential buyers, customers can subscribe for stock alerts and receive notifications when products are restocked.

The extension also provides valuable insights into customer demand, helping store owners make informed inventory decisions and improve product availability strategy.

By automating communication and providing demand analytics, this extension helps increase sales and improve customer satisfaction.

Complete Feature List

Customer Alert Features

  • Notify Me button for out-of-stock products
  • Supports product-level stock alerts
  • Supports option-level alerts (size, color, variation etc.)
  • Popup or embedded subscription form
  • Duplicate alert prevention
  • Multi-language support
  • Customizable form fields (name, email, phone, comment)
  • Captcha support option
  • Customizable button text
  • Auto-fill customer details for logged-in users
  • Works with most standard OpenCart themes

Notification Features

  • Automatic back-in-stock email notifications
  • Subscription confirmation email
  • Admin alert notification when customer subscribes
  • Manual notification option
  • Notify selected customers individually
  • Cron-based automatic notifications
  • Optional SMS notification support
  • Secure cron authentication key
  • Multi-language email templates

Email Template Features

  • Advanced email template editor
  • Reusable email layout system
  • Dynamic placeholders for product data
  • Multi-language template support
  • Custom email branding
  • Preview email before sending
  • Template assignment per store language

Stock Validation Features

  • Quantity-based stock validation
  • Stock status based validation
  • Manual product selection mode
  • Option-level stock validation
  • Flexible validation rules
  • Highlight notified records
  • Supports complex product configurations

Analytics and Reporting Features

  • Demand analytics dashboard
  • Top demanded products report
  • Demand by category report
  • Demand by brand report
  • Pending vs notified alerts overview
  • Customer demand insights
  • Export alert records to CSV
  • Track demand trends
  • Customer purchase correlation insights

Admin Control Features

  • Centralized alert management dashboard
  • Search alerts by product, email, SKU or customer
  • Bulk operations for alert records
  • Reset alert status
  • Delete records selectively
  • Update product quantity from dashboard
  • View customer statistics
  • Track notification status
  • View operational logs
  • Maintenance tools for data cleanup

Automation Features

  • Cron job for automatic notifications
  • Cron job for demand reports
  • Scheduled alert processing
  • Automated customer communication
  • Reduced manual work
  • Improved operational efficiency

Compatibility Features

  • Works with most OpenCart themes
  • Journal theme compatibility support
  • Multi-store support
  • Multi-language support
  • Template customization flexibility

How to Use

Install and configure the extension from your OpenCart admin panel.

Choose how you want stock alerts to work:

  • based on product quantity
  • based on stock status
  • manual product selection

Customers will see the Notify Me button when the product becomes unavailable.

Customers subscribe by entering their email address.

When the product is restocked, customers receive an email notification automatically.

Admin can also send notifications manually or review demand insights from the dashboard.

Cron job can be configured to fully automate the process.

Customers can manage their alerts using the premium self-service page.

Use Cases

  • Stores with high-demand products that frequently go out of stock
  • Stores selling clothing or configurable products with size or color variations
  • Stores managing limited inventory
  • Dropshipping stores handling supplier stock changes
  • Stores wanting to measure customer interest before restocking
  • Stores launching new products and collecting early demand
  • Stores wanting automated customer notifications
  • Stores wanting better demand insights

Expected Results

  • Increased sales from returning customers
  • Improved customer engagement
  • Better inventory planning decisions
  • Reduced lost sales opportunities
  • Improved customer satisfaction
  • Better understanding of product demand
  • Increased repeat visitors
  • More efficient store management
  • Automated customer communication
  • Improved conversion rates

Requirements

  • OpenCart store
  • Email functionality enabled on server
  • Cron job access recommended for automation
  • SMS gateway API required for SMS notifications (optional)

Why Choose HuntBee for Your OpenCart Store?

When you install a HuntBee extension, you are choosing a solution built by an experienced OpenCart specialist who understands real-world store challenges.

  • VerifiedOfficial OpenCart Partner with proven expertise
  • Established OpenCart Specialist Since 2012
  • 14+ Years Dedicated to OpenCart Development
  • 100+ Extensions Used by OpenCart Stores Worldwide
  • Performance-focused and SEO-friendly architecture
  • Continuous improvements and dependable support

Store Frontend Demo

Product without Options (Simple Product)

Open the product page:

Women Purple Heat Gear High-Rise Tights
https://opencart-demo.huntbee.com/demo/women-purple-heat-gear-high-rise-tights-17254908

This product is currently out of stock.

Instead of the default Add to Cart button, the extension displays a Notify Me button. This allows customers to subscribe to be notified when the product becomes available again.

Click the Notify Me button.

A subscription form will appear where the customer can enter the required quantity and email address to register for the stock alert.

Once submitted, the alert is saved and the customer will be notified automatically when the product quantity is updated.

Product with Options (Option-Level Stock Alerts)

Open the product page:

One Shoulder Satin Slip Dress
https://opencart-demo.huntbee.com/demo/one-shoulder-satin-slip-dress-agg42245

This product contains multiple options with different stock availability.

  1. First, select the option Color Black.
    • This option is available, and the Add to Cart button is displayed normally.
  2. Now select Color Blue.
  3. Since this option is out of stock, the Add to Cart button automatically changes to Notify When Available.
  4. Click the Notify button.
  5. The subscription form appears, allowing the customer to register for notification specifically for the selected out-of-stock option.

This helps store owners track demand even at the option level.

Category Page Demo

Open the category page:

https://opencart-demo.huntbee.com/demo/fashion

Locate the product:

ZIMMERMANN Wrapped Ruffle-Trim Dress

This product is out of stock, so the Notify Me button is displayed directly in the product listing.

Click the Notify Me button to open the subscription form.

Customers can subscribe without visiting the product page, making the process faster and more convenient.

The same behavior can also be observed in:

  • Product modules
  • Search results
  • Featured products
  • Latest products
  • Special products
  • Any listing page where products appear

Admin Panel Demo

Admin Dashboard:
https://opencart-demo.huntbee.com/demo/admin/index.php?route=extension/module/hb_oosn&store_id=0

Login credentials are already prefilled in the demo.

After logging in, navigate to the Stock Alert extension to view:

Alerts Tab

Displays all customer subscription records, including product name, quantity requested, email address, and subscription date.

This helps you understand which products customers are waiting for.

Statistics Tab

Shows graphical insights that help you analyze demand trends and identify high-interest products.

Templates Tab

Allows you to create and manage multiple email templates for sending stock notifications.

You can customize email content according to your store branding.

Settings Tab

Configure how the notify form appears on the storefront.

You can choose between:

  • Popup form

  • Embedded form directly on product page

Rules Settings

Control where the Notify button appears.

You can configure rules based on:

  • Product quantity

  • Stock status

Or manually choose specific products where the notify button should appear.

Out-of-Stock Products Tab

Displays products currently out of stock.

You can manually select products where the Notify button should be enabled.

This gives full control over how the feature is applied across your store.

This demo shows how the extension helps capture customer demand, track interest in out-of-stock products, and bring customers back to your store once items are available.

Video Demonstration


Open demo instruction in new tab
OPENCART
Compatibility 4.1.0.4, 4.1.0.3, 4.1.0.2, 4.1.0.1, 4.1.0.0, 4.0.2.3, 4.0.2.2, 4.0.2.1, 4.0.1.1, 4.0.1.0, 4.0.0.0,

3.0.5.1, 3.0.5.0, 3.0.4.1, 3.0.4.0, 3.0.3.9, 3.0.3.8, 3.0.3.7, 3.0.3.6, 3.0.3.5, 3.0.3.3, 3.0.3.2, 3.0.3.1, 3.0.3.0, 3.0.2.0, 3.0.1.2, 3.0.1.1, 3.0.1.0, 3.0.0.0,

2.3.0.2, 2.3.0.1, 2.3.0.0, 2.2.0.0, 2.1.0.2, 2.1.0.1, 2.0.3.1, 2.0.2.0, 2.0.1.1, 2.0.1.0, 2.0.0.0
Requirement OCMOD for opencart 2.x.x.x and 3.x.x.x, VQMOD for OpenCart 4.x.x.x
Core Files Overwrite No Core files overwritten
Multi-store Yes
Multi-lingual Yes
SUPPORT
Template Support Free support is applicable only for one template.
TECHNOLOGIES
Framework OpenCart

VERSION : 3.11.0DATE RELEASED: 22 Apr 2026
  • This update is only for opencart 3.x versions
  • Version number updated to follow our latest versioning protocol
  • Email template system updated for email type
  • Few more sample email templates added
  • Setting fields added for stock alert page manager
  • One ocmod. No separate ocmod for full pro addon.

VERSION : 10.0.7DATE RELEASED: 04 Feb 2024
  • Minor fix related to google chart & jquery (opencart 3.0.3.9)

VERSION : 10.0.6DATE RELEASED: 20 Jan 2024
  • Compatibilty test for opencart 3.0.3.9 and php8+

VERSION : 10.0.5DATE RELEASED: 26 Apr 2023
  • Fixed issue. Product ID was empty when there is no category assigned to the product. Updated the SQL query in the admin model file to fix this issue.

VERSION : 10.0.4DATE RELEASED: 15 Mar 2022
  1. Multiple out-of-stock status selections
  2. Minor validation
  3. Template ID number in the template dropdown field
  4. Updated Patches

VERSION : 10.0.2DATE RELEASED: 03 Jan 2022
  • Fixed issues with Multi-store setup

VERSION : 10.0.1DATE RELEASED: 08 Dec 2021
  • Minor fix w.r.t to SMS API

VERSION : 10.0.0DATE RELEASED: 03 Nov 2021

Extension redesigned & more features added

  1. New table added to the database to support manual product selection
  2. Quick Edit for Product Quantity, Product Option Quantity, Product Status, Product Out-of-Stock Status
  3. More information about the customer
  4. AJAX Quick filter
  5. Filter by Category, filter by Manufacturer, filter by product status, filter by notified status
  6. Demands Tab: List out all the products that are in demand along with stats like total quantity required, and total alerts for the product, and total notified.
  7. Out-of-Stock Products Tab : List of all products where notify function is enabled.
  8. Improved Stats Tab: Monthly Alert Trend, Demand by Brands, Demand by Category, Demand by Products
  9. Email Template system changed. Create unlimted templates and map template easily
  10. Email Template system supports "Email Template Designer Extension"
  11. Email Template Preview
  12. Improvised simple SMS API system
  13. Integrated support for "OpenCart SMS System"
  14. Manual selection of products
  15. Improvised setting for Notify Form
  16. Form type option added. Easily switch between popup mode or embedded mode
  17. Colored row for rows that are notified
  18. Hide/Show columns in the admin table
  19. Pop up has been removed for the product list/grid items. Now it will redirect to the product page if product is out-of-stock. This feature can be added by the support team (if required). A small snippet has to be added to the core js file
  20. Auto delete entries where product is no longer available in the database
  21. CSV Export options for subscription data, products, products demand

VERSION : 9.0.5DATE RELEASED: 13 Aug 2019
  1. Email Validation Function Updated
  2. Multiple selections of records for Notify Selected 

VERSION : 9.0.4DATE RELEASED: 04 Jun 2019
  1. Updated the extension for the latest Journal 3.0.34

VERSION : 9.0.2DATE RELEASED: 25 Mar 2019
  1. Updated compatibilty for Journal3 (w.r.t 3.0.29)

VERSION : 9.0.0DATE RELEASED: 12 Jan 2019
  1. Removed Feature : Removed addtional jquery flot chart plugin added on previous versions
  2. Code optimized for more security and maximum compatibility
  3. Added Feature: Compact view to view the records in admin
  4. Added Feature: Displays available quantity of products and its out of stock status
  5. Added Feature: Displays if the subscribed alert is from a registered customer or guest customer
  6. Added Feature: Displays total amount of purchase made previously by the particular customer
  7. Added Feature: Search option added to seach records by product id or product name or customer email or customer name
  8. Added Feature: Integrated google charts plugin
  9. Added Feature: Product Subscription trend line chart
  10. Added Feature: Individual Product Report and product subscription trend chart
  11. Added Feature: Integrated ckeditor as HTML Editor
  12. Added Feature: Optional HTML Confirmation Email to customer and template editor
  13. Added Feature: SMS HTTP API input field
  14. Added Feature: Installation of add-on script easily from the extension
  15. Added Feature: Selection and Installation of ocmod script for Journal2 template and Journal3 template
  16. Added Feature: Auto deletion of subscription record if the product is deleted

VERSION : 8.0DATE RELEASED: 15 Jun 2017

This update is only for OpenCart Versions 2.0.x.x, 2.1.x.x, 2.2.0.0, 2.3.x.x

  • VQMOD Dependency Removed
  • OpenCart's OCMOD Dependent
  • file_get_contents function dependency removed; curl function dependency removed
  • Extension location changed from Extensions to Extensions > Modules
  • Database table updated with inclusion of more columns
  • Optional Customer Comment input textarea added to capture customer comment
  • Records Quantity Selection by customer
  • Mobile validation: Minimum Allowed digits and Maximum allowed digits
  • Admin Setting Added : Enable / Disable Admin alert when customer subscribes for the alert
  • Admin Setting Added : Specify admin email address to receive notifications
  • Admin Setting Removed: Admin Email template setup removed
  • HTML template based Admin Email added
  • Detects if Google reCaptcha is enabled in admin. If disabled, enable captcha checkbox is disabled and grayed out.
  • Admin Setting Added : Authentication key for cron jobs
  • Language file updated to include more vocabulary for both admin and store front
  • Captures Customer IP Location
  • Added : Cross Origin Support
  • Added : Auto delete record for products that don't exists
  • Added : Export to Excel download option
  • Added : Notified Date fix tool
  • Added : Database table irregularities fix tool
  • Added : Charts added 
  • Added : Product Image resize 
  • Updated : Campaign tracking setup
  • Updated : Security of the extension to prevent SQL Attack
  • Fixed: Compare page bug

VERSION : 7.8.1DATE RELEASED: 03 Feb 2017
  1. Bug found while in email alert for product option. 
  2. Pagination fix for filters
  3. Journal fix

Update extension from 7.8 to 7.8.1

Only overwrite the admin and catalog folder files. Do not replace XML files.  



VERSION : 7.7DATE RELEASED: 17 Aug 2016
  • OCMOD Version released
  • Compatiblity for OpenCart 2.3.x.x Released

VERSION : 7.6DATE RELEASED: 05 Jan 2016

  • Shortcode added for customer email - {store_name} and {store_url}
  • Pagination for reports bug fixed for newer versions of opencart


VERSION : 7.5DATE RELEASED: 26 Dec 2015

  1. Store URL Tracking from customer end
  2. Multi-store functionality improved
  3. Bell icon added for opencart default template for responsive design
  4. SMS HTTP API field removed. SMS functionality can be added only from the custom work. Contact Support.
  5. Automatic reload of admin report page removed
  6. Notify popup form module removed
  7. PHP File function or CURL function server check added
  8. Bug fixed for "Alert record already exists"
  9. Upgrade 7.0 to 7.5 function added


VERSION : 7.0DATE RELEASED: 24 Oct 2015
  1. Added Google Analytics Campaign tracking, so that you know how the extension is working effectively for you
  2. Added cron job for receiving periodic demanded out-of-stock product list to admin email
  3. To upgrade from version 6.1 to 7.0 , refer http://opencart-docs.blogspot.in/2015/10/product-stock-notification-upgrading.html
Customer feedback

Reviews (30)

5 / 5 30 reviews

There are no reviews for this product.

Share your experience

Write a review

Note: HTML is not translated!
Choose 1 to 5 stars
Captcha
Tags
opencart stock alert opencart back in stock notification opencart notify me button opencart out of stock notification opencart inventory notification opencart product alert module opencart stock notification extension opencart demand tracking opencart inventory alerts opencart notify when available opencart product availability alert opencart restock alert opencart option stock alert opencart email notification module opencart automation extension opencart conversion optimization

Frequency Asked Questions (FAQs)

How does the Product Stock Notification Alert extension enhance customer engagement in OpenCart?
The Product Stock Notification Alert extension significantly enhances customer engagement by automatically notifying shoppers when an out-of-stock item becomes available again. This keeps your customers connected and increases the likelihood of return visits to your store.
What are the benefits of using the Product Stock Notification Alert for my online store?
Using the Product Stock Notification Alert offers multiple benefits: it ensures customers are promptly informed about restocks, helps in capturing lost sales, and provides insights into product demand which can guide inventory decisions.
Can the Product Stock Notification Alert extension support multiple languages and stores?
Yes, the Product Stock Notification Alert extension is designed with multi-store and multi-language compatibility, allowing you to effectively manage notifications across different stores and cater to a diverse customer base.
How can I track customer interest in specific products with the Product Stock Notification Alert?
The Product Stock Notification Alert provides advanced analytics and reports, including demand by brand or category and a list of the top 10 most demanded out-of-stock products, helping you track customer interest and manage stock more efficiently.
Does the Product Stock Notification Alert extension offer options for customizing the subscription form?
Yes, the Product Stock Notification Alert extension allows customization of the subscription form. You can enable or disable fields, choose between popup or embedded form modes, and select different popup animation effects.
What kind of notifications does the Product Stock Notification Alert send to subscribed customers?
The Product Stock Notification Alert sends automatic and manual email notifications to customers when an item is back in stock. It also supports SMS notifications and customizable HTML email templates for a personalized touch.
How does the Product Stock Notification Alert help in managing customer subscriptions?
This extension offers a robust customer subscription system, allowing customers to sign up for alerts on out-of-stock items. It also includes features for subscription confirmation and admin alerts when new subscriptions are made.
Is it possible to automate and schedule reports with the Product Stock Notification Alert?
Yes, the Product Stock Notification Alert supports automated admin reports via Cron Jobs, which can be scheduled daily or weekly to keep you updated on stock demand and customer alert activities.
Can I use the Product Stock Notification Alert to send alerts based on specific stock quantities?
Absolutely, the Product Stock Notification Alert allows for dual-mode stock validation. You can set alerts to trigger based on specific stock quantities or simply use the out-of-stock status, with options for manual overrides.
How can I ensure customer data is prefilled in the Product Stock Notification Alert subscription form?
The extension automatically prefills the subscription form for logged-in customers with their name, email, and phone, enhancing the user experience and increasing the likelihood of subscription.
What kind of reports can I generate with the Product Stock Notification Alert?
With the Product Stock Notification Alert, you can generate detailed reports including pie charts of total notified versus awaiting notifications, and bar charts analyzing demand by brand or category.
How does the Product Stock Notification Alert help in managing out-of-stock situations?
The Product Stock Notification Alert helps manage out-of-stock situations by enabling store owners to quickly update stock statuses, notify interested customers, and keep track of demand, thus optimizing stock levels and reducing missed opportunities.
Can I delete subscription records in bulk with the Product Stock Notification Alert?
Yes, the Product Stock Notification Alert includes admin tools for bulk actions, allowing you to delete all records, only notified records, or those awaiting notification, helping you manage data efficiently.
Does the Product Stock Notification Alert integrate with Google Analytics for tracking?
Yes, the Product Stock Notification Alert integrates with Google Analytics for campaign tracking. This feature enables you to monitor customer engagement and effectiveness of the notification campaigns.
What support is available for the Product Stock Notification Alert in case of template conflicts?
The Product Stock Notification Alert comes with free support to resolve any template conflicts, ensuring smooth integration and functionality across various custom and standard OpenCart templates.

© 2026 HuntBee Technologies. Powered by OpenCart.

This extension / product is currently unavailable to download. Enter your email address below and we will notify you as soon as the product becomes active.
Name
Email
Comments