Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro vs MC4WP

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. Try the Live Demo | Documentation & Support | Browse Add-ons 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. Bundle Add-ons – All 15 add-ons below plus any future add-ons, at one discounted price. 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. Unsubscribe – Adds an unsubscribe link to emails, and members can manage their waitlists from My Account. Ban Emails – Block disposable email domains (mailinator and similar), public domains, and specific addresses to stop fake signups. Never Restock – Product discontinued? Point waiting subscribers to an alternative product and notify them when it becomes available, so no waitlist goes to waste. Mailchimp – Automatically sync waitlist subscribers to your Mailchimp audience in the background. 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. ActiveCampaign – Sync subscribers to ActiveCampaign automatically. Twilio SMS – Send restock alerts by SMS in addition to email, so customers never miss a restock. Track Sales – See which subscribers purchased after receiving a restock email and measure the revenue your waitlist recovers. Export CSV – Export subscriber lists to CSV for records, newsletters, or promotions. Import CSV – Import subscribers from a CSV file when migrating from another platform or store. Edit Subscribers – Correct or update existing subscriber entries directly from the admin. Custom CSS – Style the subscribe form with color, size, and custom CSS options. No coding needed. WPML – Send every email in the subscriber’s own language using WPML string translation. 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. More Plugins by ProPluginsLab Free plugins All available free on WordPress.org: Recovero – Cart Recovery for WooCommerce – Recover abandoned carts automatically with reminder emails and win back lost revenue. Affireo – Affiliates for WooCommerce – Run your own affiliate program with referral tracking and commissions. Christmas Snow – Festive Snowfall Effect – Add a festive snow effect to your site for the holiday season. Pro plugins Nine standalone premium WooCommerce plugins, each a one-time payment with lifetime updates: Vendero – Multivendor for WooCommerce – Turn your store into a complete multi vendor marketplace with vendor dashboards, commissions and payouts. Recovero – Cart Abandonment Recovery for WooCommerce – Advanced abandoned cart recovery with automated follow up campaigns and detailed reporting. Anticipo – Pre-Orders for WooCommerce – Sell products before they are released and take payment upfront or on release. Trackero – Advanced Shipment Tracking for WooCommerce – Complete fulfillment manager. Add tracking numbers to orders and keep customers informed in order emails. Kitero – Composite Products for WooCommerce – Let customers build their own kits, boxes and product combos, with a built in product bundle feature. Giftero – Gift Cards for WooCommerce – Sell digital gift cards with customizable templates, scheduled delivery and balance management. Plusero – Extra Fees for WooCommerce – Add conditional fees and surcharges based on cart total, shipping method, payment gateway, category, user role and more. Inputo – Name Your Price for WooCommerce – Let customers choose their price. Perfect for donations, tipping and pay what you want campaigns. Affireo – Affiliates for WooCommerce – Full affiliate marketing suite with multi tier commissions, payouts and performance reports. Visit ProPluginsLab for all our premium WooCommerce plugins and solutions.

Allowing your visitors to subscribe to your newsletter should be easy. With this plugin, it finally is. This plugins helps you grow your email list in Mailchimp. You can use it to create good looking and accessible sign-up forms or integrate with any other existing form on your WordPress site, like your contact, comment or checkout form. Some (but not all) features Connect with your Mailchimp account in seconds. Sign-up forms which are good looking, user-friendly and mobile optimized. You have complete control over the form fields and can build your forms using native HTML. Seamless integration with the following plugins: WordPress Comment Form WordPress Registration Form Contact Form 7 WooCommerce Gravity Forms Ninja Forms 3 WPForms BuddyPress MemberPress Events Manager Easy Digital Downloads Give UltimateMember HTML Forms AffiliateWP Is the plugin you want to integrate with not listed above? You can probably still use our custom integration feature. Alternatively, the plugin comes with a PHP API to programmatically add a new subscriber to Mailchimp. Mailchimp for WordPress Premium: Send your WooCommerce orders to Mailchimp so you can see exactly what each subscriber purchased and how much revenue your email campaigns are generating. A multitude of available add-on plugins and integrations: Mailchimp for WordPress Premium Mailchimp Top Bar Boxzilla Pop-ups Well documented through our knowledge base. Developer friendly. For some inspiration, check out our repository of example code snippets. Ready for PHP 8.5, but backwards-compatible all the way down to PHP 7.4. What is Mailchimp? Mailchimp is a newsletter service that allows you to send out email campaigns to a list of email subscribers. It is free for lists with up to 500 email subscribers, which is why it is the newsletter-service of choice for thousands of small businesses across the globe. If you are not yet using Mailchimp, creating an account is 100% free and only takes you about 30 seconds. Support If you need some help in setting up the plugin, you have various options: Search through our knowledge base. Open a topic in the WordPress.org plugin support forums If you’re a premium user, send an email to the email address listed inside the plugin. Translations You can help translate this plugin into your language using your WordPress.org account. Development This plugin is being developed on GitHub. If you want to collaborate, please look at ibericode/mailchimp-for-wordpress. Customizing the plugin The plugin provides various filter and action hooks that allow you to modify or extend the default behavior. We’re also maintaining a collection of sample code snippets.