Back In Stock Notifier for WooCommerce

Every out-of-stock product is a lost sale waiting to happen. Back In Stock Notifier for WooCommerce captures those visitors instead of losing them. It shows an email subscription form on out-of-stock products, then automatically emails every subscriber the moment the product is restocked.

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Why store owners choose this plugin

• Built for scale. Restock emails are sent through a background process engine. Even with 10,000+ subscribers on a single product, notifications go out reliably. No server crashes, no timeouts, no duplicate emails that loop-based plugins suffer from.
• Works out of the box. Activate the plugin and the waitlist form appears on out-of-stock products immediately. No setup required.
• Native WooCommerce emails. The subscription confirmation and restock notification emails use the WooCommerce email system, so they match your store branding and are fully customizable under WooCommerce > Settings > Emails.
• Trusted by 20,000+ stores worldwide.

Supported product types

• Simple and Variable products (product level and variation level)
• Grouped products
• Simple and Variable Subscriptions (WooCommerce Subscriptions)
• Product Bundles (WooCommerce Product Bundles)

Core features

• Automatic restock emails sent through a reliable background process
• Email subscription form on out-of-stock products, for both guests and members
• Email address pre-filled for logged-in members
• Duplicate check per product, the same email is never added twice to a waitlist
• Customizable subject and message with placeholders like {product_name}, {product_link}, {cart_link} and more
• Customizable form labels, messages, and error texts
• Option to show the subscribe form for backorder products
• Fair Sending (First-Come-First-Served), on a limited restock notify only as many subscribers as units in stock, the rest stay on the waitlist for the next restock
• Email speed limit, send automatic emails gradually to respect hosting and SMTP provider limits
• Six subscribe form designs (Default, Card, Minimal, Compact, Bold, Outline) and six popup designs including five lightweight popups that need no extra library, all chosen from the settings page
• Auto Coupon, optionally send each subscriber a unique discount code that only works on the exact product or variation they waited for, with full control over discount type, amount, expiry, usage limit, minimum spend and sale item rules
• Product table placeholder for both emails, showing the subscribed product in a classic order style table with thumbnail, SKU, quantity and price
• Stock status filter on the subscribers list, including “in stock but below your notification threshold” to find subscribers the automatic sender skipped
• Auto-retry for stuck emails, an optional recovery task that resends notifications when a background job fails or never runs
• New subscriber indicator on the admin menu and subscribers list, showing how many people signed up since your last visit
• Bot protection with Google reCAPTCHA (v2/v3) and Cloudflare Turnstile
• Subscriber management dashboard to view, sort, filter, and delete subscribers
• Manual and bulk send instock mail actions
• Dashboard report widget with subscription and mail statistics
• Estimate Stock Arrival messages on the subscribe form
• Auto-delete old subscriber entries on a schedule
• GDPR-friendly privacy checkbox
• Third-party inventory management support (stock updated directly in the database)
• REST API to create, read, update, and delete subscribers
• Webhooks for subscription events
• Quantity field support
• Works with Elementor
• Translation ready

Premium Add-ons

Supercharge your waitlist with premium add-ons. Every purchase is a one-time payment with lifetime updates. No subscriptions, no recurring fees. You can browse and manage everything from your dashboard under Instock Notifier > Plugins & Add-ons.

Best value: get Bundle Add-ons, all 15 add-ons plus every future add-on, for one discounted price.

1. Bundle Add-ons – All 15 add-ons below plus any future add-ons, at one discounted price.
2. Double Opt-In – Subscribers confirm by email before joining the waitlist. Keeps your list clean and compliant, and unconfirmed entries are auto-deleted after X days.
3. Unsubscribe – Adds an unsubscribe link to emails, and members can manage their waitlists from My Account.
4. Ban Emails – Block disposable email domains (mailinator and similar), public domains, and specific addresses to stop fake signups.
5. Never Restock – Product discontinued? Point waiting subscribers to an alternative product and notify them when it becomes available, so no waitlist goes to waste.
6. Mailchimp – Automatically sync waitlist subscribers to your Mailchimp audience in the background.
7. Klaviyo – Sync subscribers to Klaviyo and trigger Klaviyo Flows for Back In Stock and Successful Subscription events, so you can build advanced automations and campaigns.
8. ActiveCampaign – Sync subscribers to ActiveCampaign automatically.
9. Twilio SMS – Send restock alerts by SMS in addition to email, so customers never miss a restock.
10. Track Sales – See which subscribers purchased after receiving a restock email and measure the revenue your waitlist recovers.
11. Export CSV – Export subscriber lists to CSV for records, newsletters, or promotions.
12. Import CSV – Import subscribers from a CSV file when migrating from another platform or store.
13. Edit Subscribers – Correct or update existing subscriber entries directly from the admin.
14. Custom CSS – Style the subscribe form with color, size, and custom CSS options. No coding needed.
15. WPML – Send every email in the subscriber’s own language using WPML string translation.
16. Polylang – Send subscription and restock emails in the subscriber’s chosen Polylang language.

See the full catalog at propluginslab.com, with more add-ons coming soon.

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