WT Waitlist

WT Waitlist is a “back in stock” waitlist for WooCommerce without bloat. Customers leave their email on an out-of-stock product page, and when the stock returns, the plugin sends a notification in the background through Action Scheduler.

Built by the Webmasters.Team team. Open-source code, no external APIs, all data stored locally in the WordPress database.

Key features

• Signup form replaces Add to cart for out-of-stock products, with variation support (per size/color).
• Custom database tables ({prefix}wt_waitlist_subscriptions, {prefix}wt_waitlist_email_log). We do not clutter wp_postmeta, and the plugin scales to tens of thousands of subscriptions.
• Action Scheduler queue (bundled with WooCommerce): batch of 50 emails per tick, automatic retries, retry log visible in WooCommerce → Status → Scheduled Actions.
• 5 min throttle per product prevents duplicate sends when multiple hooks fire (e.g. quantity change followed by status change).
• One-click unsubscribe via a link in the email (SHA-256 token), no confirmation or login required.
• GDPR-ready: consent logging (anonymized IP, timestamp, user agent), integration with WordPress Privacy Tools (export and erasure of data per email).
• CSV export of subscribers from the admin panel (streamed, no timeouts on large lists).
• Anti-spam: honeypot plus rate limiter per IP (10 submissions per hour).
• Theme compatibility: classic themes (Storefront, Twenty Twenty-One/Two/Three) plus block themes (Twenty Twenty-Four/Five). The form attaches through a hook for classic templates and through a render_block filter for FSE.
• Zero external dependencies: apart from WooCommerce, requires only plain PHP 8.1+.

Shortcode fallback

[wt_waitlist product_id="123"]: use this if your custom product template does not fire the standard hooks.

What WT Waitlist does NOT do (by design)

• No SMS, no Mailchimp/MailerLite integrations in the free version.
• No double opt-in (minimal flow: leave an email, get a notification).
• No WYSIWYG editor for email templates (HTML template lives in the plugin file, override with the wt_waitlist_notification_context filter).

These features are planned for the Pro edition. The free edition covers 100% of the core waitlist flow.