Out-of-stock does not have to mean out of luck. Kelso adds a Notify me when available form to your product pages, then sends every waiting customer an email when you restock. Built for reliability: two detection paths (inventory webhook plus a reconciliation poll), and a full send log tracking each alert from queued to delivered. Works across your full catalog and subscriber list.

• Restock detection with a built-in reconciliation backup check
• Storefront widget that lets customers request a restock alert
• Full send audit log: queued, sent, delivered, every step recorded
• Merchant-controlled subscriber list with one-click export and delete
• One-click CSV waitlist import when switching from another app