Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro


Live Demo

Back In Stock Notifier is a WooCommerce Waitlist Pro Plugin that displays the Email Subscription form on the frontend when a product is Out of Stock. When a Product comes Back in Stock, this plugin notifies the subscribers by email in the background process. Many of the existing plugins loop through the subscribers to send mail, so there is a high chance of failure or timeouts. This plugin is designed to overcome this problem by sending emails using a background process, ensuring it does not fail until the completion of the loop, thus converting your subscribers into customers.

Supported Product Types of WooCommerce

  • Simple
  • Variable
  • Grouped
  • Simple Subscription (From WooCommerce)
  • Variable Subscription (From WooCommerce)
  • Product Bundle (From WooCommerce)

We designed this product to manage subscribers in one place. What happens if we send instock mail to 10,000+ subscribers? The server will likely crash or encounter timeout issues, sometimes resulting in duplicate emails being sent to subscribers.

We designed this plugin to overcome this situation by sending emails in the background, ensuring emails are sent to the respective users without any issues.


  • Advanced Waitlist Plugin for WooCommerce.
  • Shows the Email Subscription Form when a Product is Out of Stock.
  • Automatically notify by email when a product comes Back In Stock.
  • Works with Simple Product, Variable Product, Grouped Product, Simple Subscription, and Variable Subscription (Product Level and Variant Level).
  • Google reCAPTCHA for Subscribe Field
  • Turn the interested visitors into customers using the Back In Stock Notifier.
  • Works for both Guests and Members.
  • For Members, their Email Id is pre-filled in the Subscription Form.
  • Duplicate Email Ids checked for each Product, ensuring the same Email Id will not be duplicated for the same Product Notify List.
  • Option to Show Waitlist Subscribe Form on Back Orders
  • Error Message customization options.
  • Mail subject and message are customizable in Admin Settings.
  • Translation Ready.
  • ADD-ON $10.00: WPML Compatible.
  • ADD-ON $10.00: Subscription Mail with Unsubscribe Option.
  • ADD-ON $10.00: Double Opt-In Support (Main Plugin v1.10.2 required)
  • Subscribed Email Ids can be deleted from the backend.
  • ADD-ON $10.00: Ban Email Ids and Domains.
  • ADD-ON $10.00: Custom CSS to customize frontend Subscriber Form.
  • ADD-ON $10.00: Export Waitlist as CSV file.
  • ADD-ON $10.00: Mailchimp Sync.
  • ADD-ON $10.00: Track Sales.
  • ADD-ON $10.00: Polylang.
  • ADD-ON $10.00: Edit Subscribers.
  • ADD-ON $10.00: Import CSV.
  • Notification Mails are highly customizable.
  • Works out of the box.
  • Simple and Easy to use.


We continue to support this plugin based on our paid extensions. Anyone can afford to buy our extensions as they are only $10.00 each and can be used for an unlimited number of sites (we don’t have any restrictions). Our Add-ons will add value to the core product.

Listed Extensions are not mandatory to use, but we recommend buying all these extensions.

  1. WPML – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  2. Unsubscribe – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  3. Double Opt-In – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  4. Ban Emails – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  5. Export CSV – Back In Stock Notifier

    for WooCommerce | WooCommerce Waitlist Pro – $10.00

  6. Custom CSS – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  7. Mailchimp – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  8. Track Sales – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  9. Polylang – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  10. Import CSV – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  11. Edit Subscribers – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00
  12. Bundle Add-ons(All Add-ons with discounted price) – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $30.00
  13. and more coming soon


WPML – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

This Addon is based on WPML, for sending an email to your subscribed users based on their language, which has more potential than sending it in the site language. If you are already using WPML, then you already know the advantages. After activation, this plugin will register admin_texts_cwginstocksettings for string translation. Then we pick the subscriber’s current language, check the translated text available for that language, and finally, we mail it to the corresponding user. This Addon is necessary when you want to make use of WPML.

Unsubscribe – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

If you subscribed wrongly to the product/someone wrongly subscribed to the product without your notice, using this addon, that user can unsubscribe from the list at any time. For all members (guests as well), the Success Subscriber email will have an unsubscribe link (using our shortcode). For members, they can unsubscribe from their my account at any time, which lists their subscribed lists.

Double Opt-In – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

If you subscribed wrongly to the product/someone wrongly subscribed to the product without your notice, using this addon, that user will receive an email to confirm the subscription. If they confirm, it will be considered as a confirmed subscription. If they ignore it, the pending list will be deleted automatically after X days. For all members (guests as well).

Ban Emails – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

This Add-on adds great value to the core and blocks disposable email domains/public email domains, as well as specific email addresses. Websites like mailinator, etc., allow the creation of email and subscription to the product, so this will give one more check with email addresses to avoid fake domains being subscribed.

Export CSV – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

Export your subscriber lists to CSV data, which can be used for your records or for promotional emails, newsletter subscriptions, etc. As soon as the plugin is active, an Export CSV button will appear above the list table of Subscribers, and clicking the button will export the CSV data.

Custom CSS – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

Everyone wants to customize their subscriber form, and they want an easy method to design it. Using this Addon, we designed the settings to customize the subscriber form with options like Color, Size, and Custom CSS. This Addon will be very helpful to others without having to customize CSS files.

Mailchimp – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

What if you want to sync your subscriber lists with Mailchimp? Using this add-on, you can configure it and rest assured, as we automatically fetch the subscribers (new/old) and sync them to Mailchimp in the background process.

Track Sales – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

Track Sales is an add-on for Back In Stock Notifier. Using this Addon, you can track the subscribers who purchase a product through our back in stock email.

Polylang – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

Polylang is an add-on for Back In Stock Notifier, which supports sending emails (both success subscription and back in stock email) based on the user’s chosen language.

Import CSV – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

The Import CSV add-on is for the Back In Stock Notifier plugin. Using this add-on, you can import subscribers via a CSV file. This add-on will be helpful when you want

to move/clone subscribers from other platforms to our platform. For a streamlined import, we highly suggest importing 500 entries at a time for a single CSV file.

Edit Subscribers – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $10.00

Edit Subscribers is an add-on for Back In Stock Notifier. Using this add-on, the admin can edit already subscribed user entries without any hassle. Let’s say you found that entries of subscriptions contain wrong information that you want to correct. With this add-on, you can easily achieve that.

Bundle Add-ons (All 11 Add-ons with a discounted price) + Future any New Add-ons – Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro – $30.00

Some people need a few add-ons, and some people need all add-ons. For them, we created bundle add-ons with a discounted price (11 Add-ons x $10 = $110), which is only $30 for all eleven add-ons + any new add-ons (in the future). This also comes with an unlimited license and premium support.

Something Went Wrong Error

We use one layer of security for our ajax requests, which is WP Nonce. However, due to the caching mechanism of third-party plugins or hosting, this security nonce can also get cached. This can cause the error “something went wrong, please try again after some time.” In some cases, setting the cache timeout in the plugin settings can reduce this kind of issue.

How to get rid of this error?

From version 2.0, we added different techniques to avoid the “Something Went Wrong” error. If your site has encountered such issues, we suggest you try the following steps to get rid of the error:

  1. Go to Admin Dashboard -> Instock Notifier -> Settings -> Troubleshoot Settings Section -> Frontend Subscribe Form Submission via. It has two options: WordPress AJAX (default) and WordPress REST API Route. Try changing that option to WordPress REST API Route and check it out (purge your cache and check it out).

  2. If the above steps are not helpful, then try the another method, which is Google reCAPTCHA v3 (Invisible Recaptcha). For this, you need the Site Key and Secret Key of v3. Go to Admin Dashboard -> Instock Notifier -> Settings -> Google reCAPTCHA Settings -> Enable Google reCAPTCHA and Choose Version -> V3, followed by Site Key and Secret Key (both fields are required to function properly).

  3. If v3 does not help, try v2 of Google reCAPTCHA.

How to override/create a custom template for the front-end subscribe form?

  1. Create a folder inside your current theme with the name “back-in-stock-notifier-for-woocommerce.” For example: wordpress -> wp-content -> themes -> storefront/(your theme) -> back-in-stock-notifier-for-woocommerce.

  2. Go to our plugin folder, then inside, find the “templates” folder. (wordpress -> wp-content -> plugins -> back-in-stock-notifier-for-woocommerce -> templates -> default-form.php)

  3. Open the “templates” folder and copy the file with the name “default-form.php” from that folder.

  4. Now, paste the copied file inside your theme under the folder with the name “back-in-stock-notifier-for-woocommerce” (step 1).

  5. That’s all. Now, you’ve successfully loaded the template from your theme, and you can edit it however you want.

Automatic Instock Email support for Third-party Stock Management from v2.4

Not all site owners manage stock within the website; some of them manage their stock through third-party inventory management. The problem with our plugin is that Automatic Instock Email is not triggered/detected because some third-party software directly updates the stock in the database.

From v2.4, we methodologically implemented support for Third-party stock management to send our Automatic Instock Email. Do the following:

Go to Admin Dashboard -> Instock Notifier -> Settings -> Troubleshoot Section -> Enable this option if you have updated the stock from a third-party inventory plugin. Enable that checkbox option and save changes.

Now we check the product every five minutes to trigger our Automatic Instock Email when the stock status becomes “In Stock.”

REST API Support

From Version 2.0, we added support for REST API, which allows you to create/update/get/delete subscribers. For this, you need Consumer Key and Consumer Secret.

How to generate Consumer key and Consumer Secret?

We designed our plugin to work on top of WooCommerce, so the credentials created from WooCommerce (consumer key and consumer secret) can also be used for our REST API Endpoint to perform different actions. Go to WooCommerce -> Advanced -> REST API -> Create Keys (with read/write permissions).

What endpoints are provided by your plugin?

We created documentation for the REST API, which you can check here


You can contact us via the support Forum of WordPress or by creating a support ticket from our site


  • Subscriber Lists Backend
  • Back In Stock Notifier Backend Settings
  • Subscriber Form Frontend
  • Success Subscription Email
  • Success Instock Mail


Minimum Requirements

  • PHP version 7.0 or greater
  • MySQL 5.6 or greater
  • WooCommerce 3.0+
  • WordPress 4.7+

Automatic installation

Automatic installation is the easiest option, as WordPress handles the file transfers itself, and you don’t need to leave your web browser. To do an automatic install of Back In Stock Notifier, log in to your WordPress dashboard, navigate to the Plugins menu, and click Add New.

In the search field, type “Back In Stock Notifier” and click Search Plugins. Once you’ve found our plugin with author codewoogeek, you can view details about it, such as the point release, rating, and description. Most importantly, you can install it by simply clicking “Install Now.”

Manual installation

The manual installation method involves downloading our plugin and uploading it to your web server via your favorite FTP application. The WordPress codex contains instructions on how to do this here.


Difference between this plugin and other similar plugins?

Actually, we sync and send the email to your subscribers in a background process, so server crashes or timeouts are ignored when using our plugin. This ensures a 99.99% success rate for sent emails.

How to import subscribers’ data to my new site?

You can do this by using the native way of WordPress. Go to Admin Dashboard -> Tools -> Export -> Subscribers -> Download Export File (xml). Later, you can import that data into your new site by visiting Admin Dashboard -> Tools -> Import -> Upload Downloaded XML file and Finish Import. Now you’ve successfully migrated subscribers’ data.

Something went wrong error upon subscription?


we use one layer of security for our ajax requests, which is WP Nonce. However, due to the caching mechanism of third-party plugins or hosting, this security nonce can also get cached. This can cause the error “something went wrong, please try again after some time.” In some cases, setting the cache timeout in the plugin settings can reduce this kind of issue.

How can I manually check for subscribers’ email?

Our plugin syncs with WordPress users who subscribe to our plugin. In some cases, an email id can be added without subscriptions (like cart abandonment, checkout page, etc.) by website owners. To check such emails, you can go to Admin Dashboard -> Users -> Add any data you want. For example, custom text.

What to do when a product is in stock but subscribers didn’t get emails?

If your product is in stock and your subscribers didn’t get emails, do the following:
1. Go to Admin Dashboard -> Instock Notifier -> Settings.
2. Go to the Troubleshoot Section.
3. Set “Enable to send Instock Email after ‘X’ time when stock becomes Instock” to something like 5 minutes.
4. Save Changes.


12 januari 2024
Great plugin. Its doing exactly what I need it to do. Just received some superb support, well explained, and surpassed expectations. Excellent!
16 december 2023
Plugin does what it says and easy to customize with custom css.
10 november 2023 1 reactie
No customisation options AT ALL without a paid add-on. A little vulgar to stick people with the ugly blue frame that will look good on 1% of website. I would have preferred to directly pay for something nice that losing my time and being annoyed by such poor commercial mentality.
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Version 5.2.0 on 15th February 2024
Fix: PHP Deprecated: str_contains(): Passing null to parameter #1 ($haystack) of type string is deprecated
Fix: PHP Deprecated: Creation of dynamic property CWG_Instock_Mail::$get_message is deprecated
Tweak: Updated REST API support for fields ‘subscriber_phone’ and ‘custom_quantity’ in subscriber endpoints
Tweak: Updated Webhook support for fields ‘subscriber_phone’ and ‘quantity’
Tweak: Updated minimum PHP version requirement to 7.0 or greater
Tweak: Tested with WooCommerce 8.5.2 and WordPress 6.4.3

Version 5.1.0 on 30th November 2023
New: Show Subscribers Count for Product List Table option added in Troubleshoot Settings
New: WooCommerce Composite Products Compatibility(From WooCommerce)
Fix: In Log file email not masking properly when email contain .(dot)
Fix: Instock Emails trigger in Ascending Order
Tweak: Revoked display of subscribers count column in product list table(It can be enable it in Troubleshoot settings)
Tweak: Code Enhanced
Tweak: POT File Updated
Tweak: Tested with WooCommerce 8.3.0

Version 5.0.1 on 23rd October 2023
Fix: Critical error occur on WooCommerce Subscriptions

Version 5.0.0 on 21st October 2023
New: Settings Page UI – Changeable on the Status Page.
New: Quantity Field for the Front-End Subscription Form.
New: Shortcode for ‘{cwginstock_quantity}’.
New: Enhanced In-Stock Email Cart Link now auto-includes subscribed product quantity during checkout.
New: Subscribed On and Mail Sent On dates have been set to the local date-time format (from WordPress settings).
Fix: PHP message: PHP Deprecated: Creation of dynamic property.
Fix: PHP Errors in Ajax Response: Type ‘deprecated’, Message: ‘strlen(): Passing null to parameter #1 ($string) of type string is deprecated’ with php8.2 version
Tweak: Search by Product ID in the Search Box of the Subscribers List Table.
Tweak: Added filter for the submit button label.
Tweak: POT file updated.
Tweak: Tested with WooCommerce 8.2.1 and WordPress 6.3.2.

Version 4.0.1 on 16th August 2023
Tweak: Formatted time for “Instockmail On” section in “All Subscribers” list table
Fix: PHP Warning Deprecated: Creation of dynamic property is deprecated
Tweak: Tested with WooCommerce 8.0.2 and WordPress 6.3

Version 4.0.0 on 24th June 2023
New: HPOS Compatibility
New: “Instockmail On” section in “All Subscribers” list table
New: Shortcodes for ‘{product_price}’
New: Cachebuster for instock URL
New: Customizing Settings for Admin Emails
Tweak : Removed white space in class name
Tweak: Tested with WooCommerce 7.8.0 and WordPress 6.2.2

Version 3.2 on 29th November 2022
Fix: Theme Search Functionality

Version 3.1 on 28th November 2022
New: Hide Country placeholder
Fix: PHP Notice: Undefined index: post_type
Fix: isset check for trash post
Tweak: Translation Updated
Tweak: Tested with WooCommerce 7.1.0 and WordPress 6.1

Version 3.0 on 11th June 2022
New: Custom Placeholder for Default Country in Phone Field
New: Shortcodes {product_name}, {only_product_name} supported for Success Message and Error Message of Subscribe Form
Tweak: Improvements made on ajaxurl
Tweak: POT File updated
Tweak: Tested with WooCommerce 6.5.1 and WordPress 6.0
Fix: Fatal Error Undefined Function wc_clean() upon view subscribers(back-end)

Version 2.7 on 10th March 2022
New: Force Load Template from Plugin Option added in Troubleshoot Settings
Tweak: Added Information on Status Page for “Override Template from Theme”
Tweak: Priority changed to load subscribe form for variation
Tweak: Tested with WooCommerce 6.3 and WordPress 5.9.1
Tweak: POT File for Translation updated
Fix: Product Bundle fatal error on type null

Version 2.6.1 on 22nd January 2022
New: Default country selection for phone field
Tweak: Tested with WooCommerce v6.1

Version 2.6 on 03rd January 2022
New: Auto Delete Subscribers
New: Phone Field optional
New: Shortcode for phone number
Tweak: Visibility apply for entire variation when variable product selected
Fix: is_singular php error
Fix: Add to cart url issue

Version 2.5.1 on 19th December 2021
Fix: Unable to Subscribe Product(s) after 2.5 update

Version 2.5 on 18th December 2021
New: Phone Number field for Subscribe Form
Dev: Filter added for to extend/modify screen_ids
Dev: Filter added for to modify post type arguments
Tweak: Enhanced dev filter with additional parameters
Tweak: Code enhanced for display product name
Tweak: POT file updated
Tweak: Minified cwg-popup.js
Fix: Stock status change trigger email for variation(variable product subscribers)
Fix: Cart Link issue for Simple Product

Version 2.4.3 on 29th November 2021
New: Compatible with Event Tickets Manager for WooCommerce from Author MakeWebBetter
Tweak: Restore from trash goes to original status instead of draft for subscription entries.
Tweak: Code enhanced
Fix: Malformed Cart Link for Variable Product(not Variation) when back in stock

Version 2.4.2 on 10th November 2021
Fix: Fetch product ids for third Party inventory stock status check
Fix: Search functionality not working for email in backend
Tweak: Trigger Back In Stock Email to Variable Product Subscribers if any variation belongs to variable product become instock
Tweak: Enhanced code to avoid duplication of scheduled event
Tweak: Code Improvements for displaying product names in list table
Tweak: Tested with WooCommerce 4.9.0

Version 2.4.1 on 22nd October 2021
New: Hide Google v3 reCAPTCHA Badge as an option
Tweak: Remove View Subscribers Link in Product List Table(Admin Dashboard -> Products) as an option in Troubleshoot Settings
Fix: Subscribe Form not working in Simple Subscription(WooCommerce)

Version 2.4 on 12th October 2021
New: Automatic Instock Email Support for Third-party Stock Management(Admin Dashboard -> Instock Notifier -> Settings -> Troubleshoot Section -> Enable this option if you have updated the stock from a third-party inventory plugin)
Fix: Background Process Engine Option Selection

Version on 21st September 2021
Fix: Search Functionality conflicts with WooCommerce

Version 2.3.3 on 21st September 2021
New: Google reCAPTCHA v3 support for popup
New: Name search in list table
Tweak: Pop-up js revamped

Version 2.3.2 on 10th August 2021
New: Minimum Stock Quantity Threshold Option before trigger Instock Email
New: Fully Compatible with WPC Variations Radio Buttons for WooCommerce
Fix: Email Field Margin

Version 2.3.1 on 02nd August 2021
Fix: Filter by Product
New: Option to consider only published product before send automatic email, status other than this will not be considered
Tweak: Break tag removed and added margin for input field in subscribe form

Version 2.3 on 24th July 2021
Fix: Visibility for Pop-Up
Tweak: Code enhanced as per security standards
New: Hide Subscriber Count in Admin Menu as an option

Version 2.2 on 11th June 2021
New: Abstract Mailer
New: Status Menu
New: Additional Class Name for Subscribe Button in Troubleshoot Settings
Tweak: Add to Cart Link Function enhanced
Tweak: Responsive List Table
Fix: undefined member function get_id() in null

Version 2.1 on 25th May 2021
New: Subscribe Button in Catalog Page(shop/category)
New: Option to Hide Read More Button in Catalog Page(shop/category)
New: Template method to load Subscribe Form(now can load template from theme)
Tweak: Enhanced REST API List Subscribers
Fix: Uncaught JS Error

Version 2.0 on 01st May 2021
New: Google reCAPTCHA v3
New: Frontend Subscribe Form Submission via WordPress AJAX/WordPress REST API Route
Tweak: Check stock upon Instock Email(if stock sold – this will avoid sending mail to the subscribers)
Tweak: Revamped JS
Tweak: Removed unused js scripts

Version 1.10.8 on 12th April 2021
New: Webhook Support
New: Product Table Pro Compatible
Fix: Pop-up Subscribe Form not working in Back Order
Fix: Missed Text Domain for Subscribe Form Header

Version 1.10.7 on 07th April 2021
Fix: Translation from WordPress not loaded properly
Tweak: Variable declared for to instantiate class

Version 1.10.6 on 05th April 2021
New: Frontend Subscribe Form Display Type(1. Inline Subscribe Form 2. Pop-Up Subscribe Form)

Version 1.10.5 on 30th March 2021
Fix: Google reCAPTCHA v2 Verification
Fix: Grouped Product Subscribe Form
New: Shortcode for Subscribe Form [cwginstock_subscribe_form product_id=’304′ variation_id=’314′] //product_id and variation_id are parameters, for simple product type use it as
[cwginstock_subscribe_form product_id=’304′] //enter id of simple product type, and if it is variation you need to pass parent id and variation id [cwginstock_subscribe_form product_id=’304′ variation_id=’314′]

Version 1.10.4 on 24th March 2021
Fix: Subscriber Name not appear in Success Subcription Email
Tweak: Code Improvement to support custom Column via Hook

Version 1.10.3 on 16th March 2021
New: Hide Name Field Option Added under Visibility Settings

Version 1.10.2 on 15th March 2021
New: Name Field added in Subscribe Form
Tweak: Code enhanced to support Double Opt-In Add-on
Fix: Error upon using WP All Import Plugin

Version 1.10.1 on 26th February 2021
Fix: Call to undefined member function is_type() on bool upon using WP All Import Plugin
Tweak: Improvement made two tier verification of nonce
Tweak: Changed default Background Process engine to WooCommerce Background Process(for new installation)
New: Compatible with WooCommerce v5.0

Version 1.10.0 on 15th December 2020
Tweak: Nonce Validation Improvement to avoid Something went wrong error
New: Compatible with WooCommerce v4.8.0
New: POT File added instead of po file, now admin can create po files from POT template file

Version 1.9.9 on 12th May 2020
New: Fully Compatible with WooCommerce Product Bundle

Version 1.9.8 on 04th May 2020
Fix: Email Address not empty error even input field has email address(More than one subscribe form in page cause this kind of error)
Fix: Subscribe Form duplication upon variation selection(this happen on some theme)

Version 1.9.7 on 21th April 2020
Fix: contextual_help deprecated warning after upgrade wordpress
Fix: undefined index warning enable_success_sub_mail and enable_instock_mail when that mailing option was unchecked
Tweak: Improved default email message
New: Tested with WooCommerce 4.0 and WordPress 5.4

Version 1.9.6 on 11th February 2020
Fix: Conflict with third party admin side plugins because of our admin scripts and styles.
Tweak: Added current screen id in admin side to load our scripts and styles only on required places.

Version 1.9.5 on 23rd January 2020
New: Tested with WooCommerce Version 3.9
Tweak: Allow target attribute in anchor tag , previously it was removed because of sanitization

Version 1.9.4 on 20th January 2020
New: Background Process Engine Option(one is default Background Process and Another is WooCommerce Background Process) in Settings Page
New: Bulk Option added for to send email
Tweak: Manual In stock Notification now will update subscriber status based on email response.

Version 1.9.3 on 10th January 2020
Tweak: Enhanced Security for settings options by sanitization

Version 1.9.2 on 06th January 2020
New: Option added to not overwrite theme configuration for disabled variations
New: Minified JS and CSS

Version 1.9.1 on 06th November 2019
New: Visibility Subscribe Form based on Product Tag
New: {product_image} shortcode added to show corresponding product image, you can also define the size in shortcode like {product_image=thumbnail}, accepted values are thumbnail/medium/large/ 300×200(any width and height value)
New: Tested with WooCommerce Version 3.8
Fix: Fatal error Undefined function is_product() when conflict with third party plugins(WooCommerce Boost sales)

Version 1.9 on 29th October 2019
New: Google reCAPTCHA v2 Response verify it in Server Side(as an option – this will ignore WP Nonce Validation)
Tweak: Dev API added to customize RAW Subject and Message for Email

Version on 13th October 2019
Fix: Duplicate Meta “cwg_total_subscribers” generated for products

Version 1.8.5 on 10th October 2019
Fix: Debug Error upon Subscribe from Frontend
Fix: Allow Sync Variation to Variable Product for Instock Notification when variable product has only one variation

Version 1.8.4 on 3rd October 2019
New: Subscribers Count Column in Product List Table(Admin) including sorting – Feature helps to restock product on priority
Fix: Mail sent to all Variations instead of corresponding variation
Fix: Removed unwanted codes from core

Version 1.8.3 on 16th September 2019
New: Ignore WooCommerce Out of Stock Visibility settings for Variations as an option in our settings page
New: Compatible with WPC Product Bundle Plugin

Version 1.8.2 on 2nd September 2019
New: Bulk Update Option added for mark the status
New: SKU Shortcode added in email
Tweak: Changed the capabilities from manage_options to manage_woocommerce for admin menu

Version 1.8.1 on 14th August 2019
New: Compatibility with WooCommerce 3.7
Minor Fix: Debug Warning upon filter products in subscriber list table
Minor Tweak: Moved calling product permalink function as a api

Version 1.8 on 29th July 2019
New: Shortcode for Product Name {only_product_name} (to skip product id/sku from product name)
New: Option to Hide subscribe form on sale price/regular price out of stock products
Tweak: Removed unwanted codes from core file
Fix: No Notification trigger when you manage stock from product level of variation

Version on 24th June 2019
Tweak: Compatible with Kadence Email Designer

Version 1.7.5 on 06th June 2019
Tweak: Unwanted Email Headers part removed from core(as it is already exists in WooCommerce Mail Function)
Fix: Debug Warning in Logger

Version 1.7.4 on 2nd June 2019
Fix: Variable Product Add to cart Disable Problem after update to 1.7.3

Version 1.7.3 on 1st June 2019
New: GDPR Compliance I Agree Checkbox for Subscriber Form
Tweak: Altered code of email part to load header and footer template
Tweak: Altered shortcode function to load SKU along with Product Name
Fix: Altered code to load reCaptcha only when that settings option enabled

Version 1.7.2
Fix: Conflict with Yith Gift Card Plugin (Free Version)

Version 1.7.1
New: {product_link} shortcode added
Fix: Apostrophe Problem in Settings Field

Version 1.7
New: Hide Subscribe form for Members
New: Show/Hide Subscribe Form for Specific Products and Categories
Fix: Fatal Error in subscriber list upon deletion(permanently) of simple products

Version 1.6.3
New: View Subscribers Count with Hyperlink in Products
New: Sorting Option for Product based on Product ID
New: Enable Disabled Variations (in some theme(ex:shopkeeper theme, etc) out of stock variation was disabled by default)
Tweak: Enhanced Filter by Products with Variable Product(If it is variable product then all variations belongs to variable product will be listed)

Version 1.6.2
New: Filter by Products Option Added in Backend to filter more than one specific products.

Version 1.6.1
Fix: Fatal Error in Subscriber Lists when corresponding WooCommerce Product Deleted
Tweak: Enhanced code to check whether WooCommerce is active or not

Version 1.6
Fix: Instock Variation Conflict
Fix: Undefined Index Warning in admin settings page
Tweak: Troubleshoot Settings added for to tackle subscriber form breaks/input field overlap
Tweak: Moved Inline CSS to External CSS

Version 1.5.8
Fix: Google reCAPTCHA site key value not properly linked

Version 1.5.7
Fix: Bootstrap CSS Conflict
Fix: Undefined Index in Google reCAPTCHA site key field

Version 1.5.6
New: Google reCAPTCHA added to subscribe form and customize from settings page
New: Send subscribe email copy to specific email ids (Ex: If admin/shop owner want to receive email)
Fix: Enhanced code to avoid JS Conflict
Fix: Break Theme Editor when plugin is active

Version 1.5.5
Fix: GDPR Include File Missed

Version 1.5.4
New: GDPR Support Export/Erase Personal Data

Version 1.5.3
Tweak: Subscribe Form Display by default on no variation Variable Product

Version 1.5.2
New: Option to show Subscribe Form on Back Order
Tweak: Added WooCommerce Compatibility 2.6.x

Version 1.5.1
Fix: Bootstrap JS Conflict
Tweak: Code Improvement for enqueue script

Version 1.5
Fix: Bootstrap CSS override Theme CSS
Tweak: Code Revamped
Tweak: Block UI for only subscribe box instead of page
New: Quick View Compatibility

Version 1.4
Fix: Debug Notice – session had already been started – ignoring session_start()
Tweak: Added Quick Links to Settings Page in Plugin Actions

Version 1.3
New: Subscriber Bubble Count in Admin Menu

Version 1.2
Fix: CSS Override
Fix: Block UI keep loading issue on subscribe

Version 1.1
New: Form Visibility for Guests

Version 1.0
– Initial Release