Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro vs Really Simple Security – Simple and Performant Security (formerly Really Simple SSL)

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.

Easily improve site security with WordPress Hardening, Two-Factor Authentication (2FA), Login Protection, Vulnerability Detection and SSL certificate. Really simple, Effective and Performant WordPress Security Really Simple Security is the most lightweight and easy-to-use security plugin for WordPress. It secures your WordPress website with SSL certificate generation, including proper 301 https redirection and SSL enforcement, scanning for possible vulnerabilities, Login Protection and implementing essential WordPress hardening features. We believe that security should have the absolute minimum effect on website performance, user experience and maintainability. Therefore, Really Simple Security is: Lightweight: Every security feature is developed with a modular approach and with performance in mind. Disabled features won’t load any redundant code. Easy-to-use: 1-minute configuration with short onboarding setup. Security Features Easy SSL Migration Migrates your website to HTTPS and enforces SSL in just one click. 301 redirect via PHP or .htaccess Secure cookies Let’s Encrypt: Install an SSL Certificate if your hosting provider supports manual installation. Server Health Check: Your server configuration is every bit as important for your website security. WordPress Hardening Tweak your configuration and keep WordPress fortified and safe by tackling potential weaknesses. Prevent code execution in the uploads folder Prevent login feedback and disable user enumeration Disable XML-RPC Disable directory browsing Username restrictions (block ‘admin’ and public names) and much more.. Vulnerability Detection Get notified when plugins, themes or WP core contain vulnerabilities and need appropriate action. Login Protection Allow or enforce Two-Factor Authentication (2FA) for specific user roles. Users receive a two-factor code via Email. Improve Security with Really Simple Security Pro Protect your site with all essential security features by upgrading to Really Simple Security Pro. Advanced SSL enforcement Mixed Content Scan & Fixer. Detect files that are requested over HTTP and fix them to HTTPS, both Front- and Back-end. Enable HTTP Strict Transport Security and configure your site for the HSTS Preload list. Firewall Really Simple Security Pro includes a performant and efficient WordPress firewall, to stop bots, crawlers and bad actors with IP and username blocks. 404 blocking – Blocks crawlers as they trigger unusual numbers of 404 errors. Region blocking – Only allow/block access to your site from specific regions. Automated and customisable Firewall rules. IP blocklist and allowlist. Security Headers Security headers protect your site visitors against the risk of clickjacking, cross-site-forgery attacks, stealing login credentials and malware. Independent of your Server Configuration, works on Apache, LiteSpeed, NGINX, etc. Protect your website visitors with X-XSS Protection, X-Content-Type-Options, X-Frame-Options, a Referrer Policy and CORS headers. Automatically generate your WordPress-tailored Content Security Policy. Vulnerability Measures When a vulnerability is detected in a plugin, theme or WordPress core you will get notified accordingly. With Vulnerability Measures, you can configure simple but effective measures to make sure that a critical vulnerability won’t remain unattended. Force update: An update process will be tried multiple times until it can be assumed development of a theme or plugin is abandoned. You will be notified during these steps. Quarantine: When a plugin or theme can’t be updated to solve a vulnerability, Really Simple Security can quarantine the plugin. Advanced Site Hardening Choose a custom login URL Automated File Permissions check and fixer Rename and randomize your database prefix Change the debug.log file location to a non-public folder Disable application passwords Control admin creation Disable HTTP methods, reducing HTTP requests Login Protection Secure your website’s login process and user accounts with powerful security measures. Two-Step verification (Email login) 2FA (two factor authentication) with TOTP Passwordless login with passkey login Enforce strong passwords and frequent password change Limit Login Attempts With Limit Login Attempts you can configure a threshold to temporarily or permanently block IP addresses or (non-existing) usernames. You can also throw a CAPTCHA after a failed login (hCaptcha or Google reCaptcha) Access Control Restrict access to your site for specific regions. Add specific IP addresses or IP ranges to the Blocklist or Allowlist. Useful Links Documentation Security Definitions Translate Really Simple Security Issues & pull requests Feature requests Love Really Simple Security? If you want to support the continuing development of this plugin, please consider buying Really Simple Security Pro, which includes some excellent security features and premium support. About Really Simple Plugins Our mission is to make complex WordPress requirements really easy. Really Simple Security is developed by Really Simple Plugins. For generating SSL certificates, Really Simple Security uses the le acme2 PHP Let’s Encrypt client library, thanks to ‘fbett’ for providing it. Vulnerability Detection uses WP Vulnerability, an open-source initiative by Javier Casares. Want to join as a collaborator? We’re on GitHub as well!