Notify me when available — product subscriptions for WooCommerce

“Notify me when available” for WooCommerce lets a buyer leave an email instead of an empty cart — and writes to them itself the moment the product can be ordered again. A customer opens a product that’s out of stock and leaves: that’s the scenario this plugin closes.

The form on the product page

Email and, optionally, a name — fields are filled in automatically for logged-in customers. The form can replace the “Out of stock” block, sit below it, or be placed anywhere on the page via the [ccsn_form] shortcode. A “N buyers are waiting for this product” counter can optionally be shown.

Two independent notification paths

The e-mail goes out as soon as stock is replenished, and this is triggered two ways: a WooCommerce event (stock changed in the admin, an order cancelled or refunded) and an hourly check that catches CSV/XML imports, ERP exchanges and direct database writes — none of which trigger any events. That’s exactly why the subscription doesn’t “go silent” on stores with automated stock updates.

Admin area and demand report

A subscriber list with filters by product, ID, email, status and date, pagination, and bulk actions “send now”, “return to waiting”, “delete”. Separately, a demand report: products ranked by how many people are waiting. The shortest answer to “what to restock first”.

Anti-spam and privacy

Nonce, honeypot, a time trap, and an hourly subscription limit per IP. The IP address itself is stored only as a hash. Unsubscribing is one click from the e-mail, and completed rows are cleaned up automatically.

Free version and Pro

Without a licence, up to 25 subscriptions can be active at once. Pro settings stay in their place, greyed out, with a Pro badge and a line on what exactly they give.

Why a store needs this

A product runs out — and traffic to its page keeps coming, but turns into zero. A customer sees “out of stock” and goes to a competitor, and you never find out there was demand for that item.

The subscription form turns that zero into two assets: a deferred sale and data on real demand — exactly what to restock first.

How it works, step by step

1. On a product page with no stock, a subscription form shows instead of the “Buy” button.

2. The buyer leaves an email (and, in Pro with double opt-in switched on, confirms it).

3. As soon as stock returns, the module sends an e-mail to everyone subscribed to that item.

4. In the report, you see which products have the most subscriptions — that’s your restocking queue.

Under the hood

Subscriptions live in their own table, not in product meta fields, so the list doesn’t bloat the database and reports quickly even on a large catalogue.

Sending goes through WordPress’s standard mail, meaning through your SMTP plugin if you have one set up — no separate mailer needs configuring.

How to install

1. Upload the archive via “Plugins → Add New → Upload Plugin” and activate it.

2. Check that a subscription form appeared on an out-of-stock product.

3. Subscribe yourself and restock the item — an e-mail should arrive.

4. If e-mails don’t arrive, it’s almost always the site’s mail, not the module: install an SMTP plugin.