Title: HDWebmobile Back In Stock &amp; Waitlist
Author: HDWebMobile
Published: <strong>August 3, 2026</strong>
Last modified: August 3, 2026

---

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# HDWebmobile Back In Stock & Waitlist

 By [HDWebMobile](https://profiles.wordpress.org/htrxuan/)

[Download](https://downloads.wordpress.org/plugin/hdwebmobile-back-in-stock-waitlist.1.0.0.zip)

 * [Details](https://wordpress.org/plugins/hdwebmobile-back-in-stock-waitlist/#description)
 * [Reviews](https://wordpress.org/plugins/hdwebmobile-back-in-stock-waitlist/#reviews)
 *  [Installation](https://wordpress.org/plugins/hdwebmobile-back-in-stock-waitlist/#installation)
 * [Development](https://wordpress.org/plugins/hdwebmobile-back-in-stock-waitlist/#developers)

 [Support](https://wordpress.org/support/plugin/hdwebmobile-back-in-stock-waitlist/)

## Description

HDWebmobile Back In Stock & Waitlist adds a “Notify Me” signup to out-of-stock products,
then reliably emails subscribers when the item comes back — processed through WooCommerce’s
own Action Scheduler in the background rather than sent inline, so a slow or failed
send never gets silently dropped.

#### Key Features

 * AJAX “Notify Me” signup on out-of-stock simple products — no page reload
 * Restock detection hooks WooCommerce’s own stock-status change event, reliably
 * Notifications are queued through Action Scheduler (bundled with WooCommerce) 
   and logged on every attempt, success or failure
 * Fair batching: if only a few units are restocked, only that many of the oldest
   waiting subscribers are notified — the rest stay queued for the next restock 
   or a manual batch
 * Notification email is a real WooCommerce transactional email (WooCommerce > Settings
   > Emails), so merchant email styling and subject/heading customization apply 
   automatically
 * One-click, no-login-required unsubscribe link in every notification
 * Admin waitlist screen (WooCommerce > Waitlist) with search, status filter, and
   a manual “Notify next batch” action

#### Limitations (please read before installing)

 * Email notifications only — no SMS/push in this version
 * Single-step signup (email + optional name); no double opt-in — a deliberate choice
   to keep signup friction low
 * Variable-product (per-variation) waitlist signup and restock detection is included
   in the code but is **not currently reliable on all WooCommerce versions**: some
   versions have a data-layer issue where saving stock changes to an _existing_ 
   product variation does not persist the change or fire the usual stock hooks. 
   Test variation restock notifications on your own site before relying on them;
   simple products are unaffected and fully supported.
 * Fair batching depends on the product tracking a real stock quantity; if stock
   isn’t managed, all waiting subscribers are notified at once
 * The manual “Notify next batch” admin action runs synchronously on click; very
   large pending waitlists (several hundred+) could approach PHP’s execution time
   limit

### How to Use

#### 1. No setup required to start collecting signups

As soon as the plugin is active, any **simple product** with stock status “Out of
stock” automatically shows an **“Enter your email and we’ll let you know when this
is back in stock”** form in place of the normal Add to Cart button (Screenshot 1).
There’s nothing to configure to turn this on.

#### 2. What a customer sees

They enter their email (name is optional) and click **Notify Me**. The form submits
over AJAX — no page reload — and immediately confirms **“You’re on the list! We’ll
email you when it’s back.”** (Screenshot 2).

#### 3. What happens when you restock

Update the product’s stock status back to “In stock” (or increase its stock quantity)
the normal way, through the product edit screen, a CSV import, or any other plugin.
This plugin hooks WooCommerce’s own stock-status-change event — you don’t need to
do anything else. Notification jobs are then queued through Action Scheduler (bundled
with WooCommerce) and sent in the background, so a large waitlist never blocks your
restock save.

#### 4. Fair batching for limited restocks

If you only restocked a few units, only that many of the **oldest** waiting subscribers
are notified — the rest stay queued for the next restock, or you can notify a batch
manually (see below). This prevents an email blast promising stock to more people
than you actually have.

#### 5. Manage the waitlist

Go to **WooCommerce > Waitlist** (Screenshot 3) to see every signup with its product,
email, name, status (**Waiting** / **Notified**), signup date, and notified date.
Search by email or filter by status, and use the **“Notify next batch”** action 
if you want to trigger a send manually instead of waiting for the next stock update.

#### 6. Customize the notification email

The notification is a real WooCommerce transactional email under **WooCommerce >
Settings > Emails**, so it inherits your store’s email header/footer styling automatically
and its subject/heading are editable there like any other WooCommerce email.

#### 7. Unsubscribing

Every notification email includes a one-click unsubscribe link that needs no login—
customers who no longer want restock alerts can remove themselves instantly.

## Screenshots

[⌊The "Notify Me" signup form, shown automatically on an out-of-stock product.⌉⌊
The "Notify Me" signup form, shown automatically on an out-of-stock product.⌉[

The “Notify Me” signup form, shown automatically on an out-of-stock product.

[⌊The instant AJAX confirmation after a customer signs up.⌉⌊The instant AJAX confirmation
after a customer signs up.⌉[

The instant AJAX confirmation after a customer signs up.

[⌊The WooCommerce > Waitlist admin screen — signups move from "Waiting" to "Notified"
once the restock email goes out.⌉⌊The WooCommerce > Waitlist admin screen — signups
move from "Waiting" to "Notified" once the restock email goes out.⌉[

The WooCommerce > Waitlist admin screen — signups move from “Waiting” to “Notified”
once the restock email goes out.

## Installation

 1. Upload the plugin files to the `/wp-content/plugins/hdwebmobile-back-in-stock-waitlist`
    directory, or install the plugin through the WordPress plugins screen directly.
 2. Activate the plugin through the ‘Plugins’ screen in WordPress. WooCommerce must
    already be installed and active.
 3. That’s it — out-of-stock products automatically show a “Notify Me” signup. Manage
    subscribers and customize the notification email under WooCommerce > Waitlist and
    WooCommerce > Settings > Emails.

## Reviews

There are no reviews for this plugin.

## Contributors & Developers

“HDWebmobile Back In Stock & Waitlist” is open source software. The following people
have contributed to this plugin.

Contributors

 *   [ HDWebMobile ](https://profiles.wordpress.org/htrxuan/)

[Translate “HDWebmobile Back In Stock & Waitlist” into your language.](https://translate.wordpress.org/projects/wp-plugins/hdwebmobile-back-in-stock-waitlist)

### Interested in development?

[Browse the code](https://plugins.trac.wordpress.org/browser/hdwebmobile-back-in-stock-waitlist/),
check out the [SVN repository](https://plugins.svn.wordpress.org/hdwebmobile-back-in-stock-waitlist/),
or subscribe to the [development log](https://plugins.trac.wordpress.org/log/hdwebmobile-back-in-stock-waitlist/)
by [RSS](https://plugins.trac.wordpress.org/log/hdwebmobile-back-in-stock-waitlist/?limit=100&mode=stop_on_copy&format=rss).

## Changelog

#### 1.0.0

 * Initial release: AJAX waitlist signup for simple products and variations, Action
   Scheduler-driven restock notifications, fair quantity-aware batching, WC_Email
   integration, one-click unsubscribe, admin waitlist management screen.

## Meta

 *  Version **1.0.0**
 *  Last updated **1 day ago**
 *  Active installations **Fewer than 10**
 *  WordPress version ** 6.9 or higher **
 *  Tested up to **7.0.2**
 *  PHP version ** 7.4 or higher **
 * Tags
 * [back in stock](https://wordpress.org/plugins/tags/back-in-stock/)[notify me](https://wordpress.org/plugins/tags/notify-me/)
   [waitlist](https://wordpress.org/plugins/tags/waitlist/)[woocommerce](https://wordpress.org/plugins/tags/woocommerce/)
 *  [Advanced View](https://wordpress.org/plugins/hdwebmobile-back-in-stock-waitlist/advanced/)

## Ratings

No reviews have been submitted yet.

[Your review](https://wordpress.org/support/plugin/hdwebmobile-back-in-stock-waitlist/reviews/#new-post)

[See all reviews](https://wordpress.org/support/plugin/hdwebmobile-back-in-stock-waitlist/reviews/)

## Contributors

 *   [ HDWebMobile ](https://profiles.wordpress.org/htrxuan/)

## Support

Got something to say? Need help?

 [View support forum](https://wordpress.org/support/plugin/hdwebmobile-back-in-stock-waitlist/)

## Donate

Would you like to support the advancement of this plugin?

 [ Donate to this plugin ](https://paypal.me/htrxuan/20)