RestockSignal captures waitlists on sold‑out Shopify products and sends automatic alerts the second stock returns — so you don't lose demand to competitors.
Install time
Alert delivery
Set it up once. RestockSignal handles the rest — capturing demand, monitoring inventory, and emailing customers the moment products come back.
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When a product sells out, a "Notify Me" form appears on the product page. Customers enter their email to join the waitlist.
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The moment you restock, Shopify fires a webhook. RestockSignal picks it up instantly — no polling, no cron jobs.
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Waitlisted customers get a clean, branded email within 60 seconds. They click through and buy.
Most Shopify stores lose 100% of shoppers when a product goes out of stock. Those customers leave, search elsewhere, and buy from a competitor.
RestockSignal keeps the beta pitch tied to merchant economics: capture demand on sold-out products, notify customers fast, and recover purchases that would otherwise disappear.
A $9 founding plan pays back with a single recovered order for most stores selling products above $15.
Track waitlist signups, restock alerts sent, and recovered purchases during the free pilot so merchants can see clear ROI before billing starts.
Use RestockSignal on repeat sellouts, limited drops, seasonal inventory, and popular variants where shoppers already showed purchase intent.
No bloated feature lists. RestockSignal does one thing well: capture demand on sold-out products and convert it into sales.
Elegant product-page block that appears only when items are sold out. Matches your theme automatically.
Inventory changes trigger emails instantly. No polling, no manual sends, no delays.
SPF/DKIM verified sending via Postmark. Alerts land in the inbox, not spam.
See waitlist counts by product and variant. Know exactly which items customers want.
Customers get instant confirmation when they join — building trust from the first interaction.
Built-in, compliant unsubscribe flow. Protects your brand and keeps deliverability clean.
We're onboarding a small group of beta partners. After the beta, pricing starts at $9/month.
$0/mo
Free for 3 months. No card required.
$9/mo
Locked in for beta partners after free period.
From $15/mo
Public pricing after beta launch.
RestockSignal works best when a merchant has repeat sellouts, clear gross margin, and a restock window where shoppers need a fast nudge back to checkout.
Start with a product or variant that regularly sells through so the pilot has demand to capture immediately.
Tell us the average order value and target recovered orders so the free beta has a simple success metric.
Install before inventory returns, collect waitlist demand, and send alerts while buying intent is still fresh.
Email us your store URL and we'll have RestockSignal installed in 5 minutes. Free for 3 months, no card required.
Start your free pilot →