Capture demand while the product is unavailable.
Theme-friendly widgets collect email, SMS, or browser push subscribers when variants sell out, prices matter, or shoppers save products for later.
For Shopify stores with sold-out products and missed demand
Shelf Alerts
A sold-out product page should not be a dead end.
Capture the waitlist before inventory comes back, then trigger the branded back-in-stock, price-drop, preorder, wishlist, low-stock, and retargeting messages that bring shoppers back.
Email
SMS
Push
Klaviyo
Mailchimp
Omnisend
Capture hidden demand
Turn sold-out pages, wishlists, price drops, and browse intent into recoverable shopper signals.
Build the list before restock
The best restock audience is already waiting when inventory returns.
Know what came back
Track subscribers, clicks, and recovered revenue tied back to Shopify demand.
Workflow
Build the restock list before inventory comes back.
When customers ask "when is this back?", you already have demand. Shelf Alerts captures it on the product page, watches Shopify inventory and pricing, then sends the right message when there is a reason to return.
Let inventory changes trigger the workflow.
Stock returns, low-stock thresholds, and price changes create eligible audiences automatically, with dedupe and send-window controls in the background.
Recover revenue with proof, not guesses.
Merchants can trace subscribers, clicks, and recovered revenue while pushing subscriber and event data to Klaviyo, Mailchimp, Omnisend, Zapier, or GA4.
Product
Klaviyo can send. Shelf Alerts handles the storefront trigger.
Merchants still need the product-page capture, inventory signal, timing rules, and recovery reporting that sit before the marketing flow. Shelf Alerts keeps that workflow clear.
Waitlist capture
Product-page forms for sold-out variants, price watchers, wishlists, and preorder demand.
Inventory triggers
Back-in-stock, price-drop, and low-stock events routed without manual list work.
Branded delivery
Sender identity, logos, colors, button copy, previews, and send windows.
Measurement
Subscriber growth, clicks, conversions, and exports for the rest of the stack.
Features
Six ways to capture intent before it disappears.
Use the pieces individually or stack them together around stockouts, launches, replenishment cycles, seasonal demand, and fast-moving catalogs.
Back-in-stock
Capture demand on sold-out products and automatically notify shoppers when inventory returns.
Price drops
Let price-aware shoppers raise a hand and bring them back when a product hits a better buying moment.
Preorders
Keep demand moving before inventory lands with preorder flows built around variant intent.
Wishlists
Let shoppers save products and give merchants a durable signal to act on later.
Low-stock alerts
Surface scarcity and follow up before recently restocked products disappear again.
Retargeting
Reconnect with shoppers who viewed products but did not buy, using browse behavior as another demand signal.
“We sold out, but now we know how much demand was waiting.”
A product built for launch days, replenishment cycles, and the quiet revenue leak behind every sold-out page with no waitlist.
Pricing
Simple plans for stores ready to recover missed demand.
Start with the free plan and upgrade when waitlist volume, sender control, and support become meaningful.
$0 /mo
100 notifications per month for getting the waitlist and recovery loop live.
- Unlimited subscribers
- Email customization
- Analytics dashboard
$19 /mo
1,000 notifications per month with stronger brand and restock controls.
- Everything in Free
- Custom sender email
- CSV export
- Send windows
$39 /mo
5,000 notifications per month for larger catalogs and higher waitlist volume.
- Everything in Starter
- Priority support
- Logo upload
Do not let the next stockout hide demand.
Install Shelf Alerts and turn sold-out products, price changes, saved products, and browse intent into clean Shopify recovery workflows.