Back In Stock Notifier for WooCommerce | WooCommerce Waitlist Pro vs WP Mail SMTP by WPForms – The Most Popular SMTP and

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.

WordPress Mail SMTP Plugin Is your WordPress site not sending emails? You’re not alone. 4+ million websites use WP Mail SMTP to send emails reliably. Our goal is to make email deliverability easy so that your emails always reach the inbox. WP Mail SMTP fixes your email deliverability issues by reconfiguring WordPress to use a proper SMTP provider when sending emails. Best of all, our easy-to-use Setup Wizard and detailed documentation guide you through the process. WP Mail SMTP is free and has everything you need to reliably send your WordPress emails! WP Mail SMTP Pro unlocks even more powerful features like email logging, advanced email reporting and stats, backup connections, email alerts, smart conditional routing, and much more. What is SMTP? SMTP (Simple Mail Transfer Protocol) is an industry-standard for sending emails. Proper SMTP configuration helps increase email deliverability by adding authentication to the emails sent from your site. Popular email clients like Gmail, Yahoo, Office 365, and Zoho are in a constant battle with email spammers, so they check whether emails are originating from a genuine sender. If the proper authentication isn’t there, emails either go in the SPAM folder or, worse, disappear. This is a problem for a lot of WordPress sites. By default, WordPress uses the PHP mail function to send emails generated by WordPress or any contact form plugin like WPForms. But most WordPress hosting companies don’t have their servers properly configured for sending PHP emails. This is why WordPress emails aren’t delivered. How does WP Mail SMTP work? WP Mail SMTP plugin easily resolves email delivery problems by changing the way your WordPress site sends email. We reconfigure the wp_mail() function to use proper SMTP host credentials or an SMTP mail provider. With our built-in SMTP mail provider integrations (recommended), emails are sent using the provider’s direct API. Even if your web host is blocking SMTP ports, your emails will still be sent successfully. This helps you fix all WordPress not sending email issues. WP Mail SMTP plugin includes many different SMTP mailers: SendLayer (#1 Recommended) SMTP.com (Recommended) Brevo (formerly Sendinblue) SMTP (Recommended) Gmail SMTP (Gmail, Google Workspace, G Suite) Elastic Email Mailgun SMTP Mailjet SMTP SendGrid SMTP Postmark SMTP SparkPost SMTP SMTP2GO Microsoft SMTP One-Click Setup (Outlook.com and Office 365) [Pro] Amazon SES SMTP [Pro] Zoho Mail SMTP [Pro] Other SMTP For most options, you can specify the “from name” and “email address” for outgoing emails too. All of these powerful features make WP Mail SMTP the best SMTP solution for WordPress. If you don’t know which mailer to choose, see our Complete Guide to WP Mail SMTP Mailers. SendLayer SendLayer is our #1 recommended transactional email service. Its affordable pricing and simple setup make it the perfect choice for sending emails from WordPress. It also has open and click tracking and email logs. SendLayer is reliable, fast, and easy to set up. You can send hundreds of emails for free when you sign up for a trial. Read our SendLayer documentation for more details. SMTP.COM SMTP.com is a recommended transactional email service. With over 22 years of email delivery expertise, SMTP.com has a reputation for being one of the most reliable senders on the internet. You can start sending emails in minutes and benefit from 50,000 free emails in your first 30 days. Read our SMTP.com documentation for more details. Brevo (formerly Sendinblue) SMTP Brevo is a recommended transactional email service. It serves 80,000+ companies worldwide. Brevo is reliable, fast, and gives you 300 free emails per day. Read our Brevo documentation for more details. WP Mail SMTP PRO In addition to native Microsoft, Amazon SES, and Zoho Mail integrations, WP Mail SMTP Pro provides access to many other powerful features. Click here to purchase WP Mail SMTP Pro now! Email Log Email logging is a powerful feature that keeps a record of all sent emails in WordPress. Email logging helps you to archive, audit, resend, or test email delivery and formatting. Our WordPress email logs also include: Email Log Details Our email logs provide a complete history of all emails sent from WordPress. View the subject, sender, recipients, content, headers, open and click rates, delivery status, source plugin, and more! Resend Emails Resend emails individually or in bulk, whether they failed or were delivered successfully. You can also forward important emails to an alternative email address. And many more Email Log Features Store all email attachments, export email logs, print emails, see delivery status, and more. Email Reports Review weekly sent and failed emails in a dashboard chart. Email reports make it easy to track deliverability and engagement. Open rates and click-through rates are grouped by subject line, making it easy to see the performance of your campaigns or notifications. Weekly Email Summary Get statistics about WordPress emails, including how many emails are being sent and which ones are being opened and clicked. The Summary also shows you deliverability statistics without the need to log in to WordPress to check them. Track Email Opens and Clicks View open and click stats for WordPress emails, grouped by subject line in your Email Report. Email Alerts If your emails stop sending, get notified instantly via Slack, Microsoft Teams, Discord, SMS/ Twilio, webhooks, or email (via secure API). In combination with our email logging and resending features, Email Alerts ensure that no important email will ever be lost. Backup Connection Configure an extra connection that kicks in if your primary connection fails. WP Mail SMTP automatically detects connection issues and automatically switches to the backup mailer. It will also automatically retry emails that failed. Smart Conditional Routing Create criteria to send different types of emails using different mailers. Filter by the contents of the email Subject or Message, From or To addresses, the plugin that generated the email, and more. This allows you to mix transactional and marketing providers to improve deliverability. Rate Limiting Control the number of emails your WordPress site sends in a specific amount of time so you stay within your SMTP provider’s rate limits. WP Mail SMTP allows you to specify the maximum number of emails that will be sent every minute, hour, day, week, or month and automatically queues emails to stay within those limits. Optimized Email Sending Are emails slowing down your site? Let WP Mail SMTP queue your emails for better performance. With optimized sending, emails are queued in the background and sent when your server has sufficient resources, avoiding bottlenecks that can slow down your site. Manage WordPress Emails and Notifications Control the default notifications WordPress sends. Use a simple switch to disable specific types of notifications if you don’t want to receive them. WordPress Multisite WordPress Multisite Network Settings For users running a multisite network, save time with a centralized location to easily configure your SMTP settings for all sites. Manage Multisite Email Logs Easily Network Admins can view and manage email logs for subsites with easy switching and dashboard views. Expert Support We provide limited support on the WordPress.org forums. World-class one-on-one email support is available to WP Mail SMTP Pro users. White Glove Setup If you’re not sure how to fix your emails, sit back and relax. We’ll set up WP Mail SMTP for you! White Glove Setup includes installation, configuration in WordPress, DNS configuration, full mailer setup, and testing. White Glove Setup is available for our recommended mailers: SendLayer, Brevo, and SMTP.com. Credits WP Mail SMTP plugin was originally created by Callum Macdonald. It is now owned and maintained by the team behind WPForms – the best drag & drop form builder for WordPress. You can try the free version of WPForms plugin to see why it’s the best in the market.