Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro vs Zoho Flow – No-Code Workflow Automation

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.

Integrate your plugins with hundreds of business applications and automate workflows between them using Zoho Flow. With an intuitive drag-and-drop workflow builder, you can connect all your apps and customize data flow between them exactly the way you want. Build automations that save time and eliminate human error—no coding required. Powerful tools to help you tailor detailed workflows Intuitive drag-and-drop flow builder Trigger from multiple sources, like app events, webhooks, schedules, emails, RSS/Atom feeds, and URLs Conditional logic using decisions, delays, and custom functions Deeper insights with dashboards and flow histories On-prem integrations to connect your apps with your on-premises system Team collaboration with Zoho Flow organizations Reduced margins of error with error branching and auto and manual reruns Try Zoho Flow for free Integrations for your favorite plugins: Online Forms Lead capture: Transfer lead information from form builders like Ninja Forms, WPForms, and Contact Form 7 to popular apps like Zoho CRM, Salesforce, and Mailchimp instantly. Feedback management: Move feedback form responses collected using Gravity Forms, Fluent Forms, and other online forms to customer support software (Zoho Desk, Zendesk) in seconds, for better customer satisfaction. Explore integrations: Contact Form 7, WPForms, Ninja Forms, Gravity Forms, Forminator, Formidable Forms, Fluent Forms, Everest Forms, Gravity Forms, Bit Form, PlanSo Forms, Quiz Maker, WS Form, Happyforms, weForms, UserFeedback, JetFormBuilder, MetForm, Kali Forms, RomethemeForm, WPZOOM Forms, Snow Monkey Forms, Gutena Forms, WP-Polls, Quiz And Survey Master, SureForms, Form Maker, Quill Forms, ARForms, BuddyForms, HTML Forms, AIO Forms Email and Notifications Reliable email delivery: Use SMTP plugin integrations to ensure reliable email delivery from WordPress, especially transactional emails. Automated notifications: Integrate email plugins with form builder plugins to add subscribers to your mailing lists automatically. Explore integrations: WP Mail SMTP, FluentSMTP, Post SMTP CRM & Marketing Automation Task management: Integrate CRM plugins with task management apps, such as Zoho Projects or Asana, to assign and manage deals, add tasks for new leads, and more. Email/newsletter campaigns: Connect marketing plugins like Groundhogg and Mailster to Mailgun or Mailchimp to create and send newsletters to subscribers. Explore integrations: FluentCRM, Groundhogg, Mailster, MailPoet, The Newsletter Plugin, Hustle, Jetpack CRM Membership and Subscriptions Subscription services: Use membership plugins, such as Ultimate Member and Simple Membership, alongside WordPress to create subscription-based services and restrict access to premium content. Seamless payments: Integrate membership plugins with payment gateways for seamless payment processing. User access control: Integrate user management plugins like User Registration with membership plugins, for comprehensive user access control. Explore integrations: Ultimate Member, Paid Memberships Pro, User Registration, WP-Members, Simple Membership, Profile Builder, BuddyBoss, Login/Signup Popup, Super Socializer, UsersWP, Restrict User Access, New User Approve, Paid Member Subscriptions, RegistrationMagic, WP User Manager, Restrict Content, DigiMember, ARMember, SureMembers Ecommerce Order fulfillment: Integrate WooCommerce with finance-based apps, such as Zoho Books or QuickBooks, to instantly create invoices for new orders. Explore integrations: WooCommerce, Download Manager, Easy Digital Downloads LMS & eLearning Online course management: Integrate plugins, such as LearnDash, with membership plugins like DigiMember to create and manage online courses with granular access controls. Explore integrations: LearnDash, Tutor LMS, LifterLMS Tables Data records and backups: Integrate table plugins with your ecommerce or inventory applications to record and manage stock history, prices, and more. Explore integrations: Ninja Tables, TablePress Anti-spam & Security Spam protection: Use anti-spam plugins to protect contact forms and comment sections in your WordPress pages from spam submissions. Explore integrations: Akismet Website & CMS Auto-generated WordPress posts: Integrate WordPress with ChatGPT to regularly post articles based on preset inputs and queries. Scheduled WordPress posts: Automatically publish content to WordPress from word processing and note-taking tools like Zoho Writer or OneNote. Explore integrations: WordPress.com (fully-hosted), WordPress.org (self-hosted), Elementor Pro, Divi, Spectra, SiteOrigin Widgets Bundle, Kadence Blocks, CoBlocks, Bricks, Otter Blocks, Essential Blocks, PublishPress Blocks Others Custom data fields: Use custom field plugins to add custom data fields to forms, posts, and more. Customer support management: Integrate form plugins with help desk tools for managing customer support tickets and inquiries. Booking management: Connect your booking plugins with calendars, payment gateways, and CRM tools to manage travel bookings efficiently. Explore integrations: Advanced Custom Fields, Code Snippets, JetEngine, Fluent Support, GiveWP, AffiliateWP, The Events Calendar, Event Tickets, Events Manager, Amelia, Bookly, WP Booking Calendar,Simply Schedule Appointments, Appointment Hour Booking, WP Simple Booking Calendar, WP Booking System, WP Travel Engine, BookingPress, Booking Package, Bookit, VikBooking, Fluent Booking, Popup Maker, FeedbackWP, Wappointment External services This plugin connects to external services provided by Zoho Corporation Pvt. Ltd. to enable integration and automation features using Zoho Flow. Zoho Flow Widget Service (flow.zoho.com) This plugin loads a widget from Zoho Flow (flow.zoho.com) to display integration templates and allow users to create automation workflows from the WordPress admin dashboard. What the service does: Displays Zoho Flow templates and provides a way to create flows. When data is sent: A request is made when an admin user opens the Zoho Flow plugin page in the WordPress dashboard. What data is sent: Selected service identifier (e.g., “contact_form_7” or other integration identifiers) Why data is sent: To load and display relevant Zoho Flow templates and enable flow creation. Service provider: Zoho Corporation Pvt. Ltd. Terms of Service: https://www.zoho.com/legal/terms.html Privacy Policy: https://www.zoho.com/privacy.html Zoho TLS Test Service (tlstest.zoho.com) This plugin performs a TLS capability check using Zoho’s test endpoint (tlstest.zoho.com). What the service does: Verifies that your server supports secure TLS/SSL connections required for Zoho services. When data is sent: A request is made during plugin initialization or setup. What data is sent: A standard HTTPS request No personal user data or WordPress site content is transmitted Why data is sent: To confirm that secure communication with Zoho services is possible. Service provider: Zoho Corporation Pvt. Ltd. Terms of Service: https://www.zoho.com/legal/terms.html Privacy Policy: https://www.zoho.com/privacy.html