Backly - Back in Stock Alerts
Turn sold-out products into sales with notify me buttons and automatic back in stock email alerts.
Last updated: July 16, 2026
Overview
Shoppers who land on a sold-out product leave and rarely come back. The demand is real, but it is invisible and unrecoverable. Backly adds a notify me button to every out-of-stock variant so shoppers join a waitlist instead of bouncing. When inventory returns, everyone waiting gets an automatic back in stock email with a direct link to buy. The widget installs as a theme app extension—no code, no theme edits, and nothing left behind on uninstall. See which sold-out products shoppers want most, follow inventory across every location, sync signups to Klaviyo, and export your waitlist any time.
Features
Core Features
- Notify Me Widget:Appears automatically on sold-out products, no code or theme edits
- Automatic Alerts:Emails send the moment inventory returns
- Multi-Location:Follows stock across every location, not just one
- Variant Waitlists:Every size, colour, and option gets its own waitlist
- 21 Languages:Widget text matches your shopper's language automatically
- Unlimited Signups:Collect waitlist entries on every plan, including Free
- Stock Thresholds:Only alert once you have enough units to fulfil
- Manual Sends:Notify a product's waitlist on demand from the dashboard
Analytics & Demand
- Demand Dashboard:See the sold-out products shoppers want most, ranked
- Click Tracking:Know which alerts actually drove a visit back
- Click-Through Rate:Measure how your alerts perform over time
- Waitlist Value:See the revenue waiting on each sold-out product
- Demand Reports:Break demand down by product and by variant
- Send History:A full log of every alert the app has sent
Email & Integrations
- Custom Content:Edit subject, heading, message, and button colour
- Your Branding:Remove Backly branding and set your own reply-to address
- Klaviyo:Sync signups and deliver alerts through your own Klaviyo flows
- Reminder Emails:One follow-up when an alert goes unclicked and stock remains
- Delivery Waves:Release alerts in batches to protect limited stock
- Test Sends:Preview any template in your own inbox before it goes out
Technical Features
- Theme App Extension:Native install, clean uninstall, no leftover code
- No Customer Data:Emails come from our own form, never from Shopify records
- Lightweight Widget:Around 3.5KB gzipped with no third-party requests
- Automatic Updates:Stays current with Shopify platform changes
Support & Assistance
- Setup:A two-step setup guide gets you live in minutes
- Training:Best practices for restock and waitlist strategy
- Support:Technical assistance and troubleshooting
- Updates:Regular feature enhancements and bug fixes
Languages: English (storefront widget available in 21 languages)
Categories: Stock alerts
Pricing
Free
Free
- 50 email alerts per month
- Unlimited waitlist signups
- Notify me widget, automatic placement
- Automatic back in stock alerts
- Multi-location inventory support
- Notify me widget in 21 languages
- Demand overview on dashboard
- Email support
Growth
$9.90/month or $99/year (save 17%)
- Everything in Free
- Unlimited email alerts
- No Backly branding in emails
- Custom email content, colors, reply-to
- Klaviyo signup sync and flow delivery
- Reminder emails and delivery waves
- Send thresholds and manual sends
- Add subscribers manually + CSV export
- 7-day free trial
Pro
$19.90/month or $199/year (save 17%)
- Everything in Growth
- Click tracking on every alert
- Click-through rate analytics
- Waitlist value and clicked-through value
- Demand reports by product and variant
- Full send history log
- Priority support
- 7-day free trial
All charges are billed in USD. Recurring and usage-based charges are billed every 30 days.
Data Access
This app needs access to the following data to work on your store:
View store data
- Products
- Inventory
- Themes
- Online Store
View personal data
- None
Backly never reads customer records from Shopify. Shopper email addresses are collected first-party through the app's own notify me form and are used only to send the back in stock alerts those shoppers asked for. Uninstalling revokes access immediately, and your data is purged when Shopify confirms the uninstall.
Learn more about data usage in our privacy policy below.
Developer
Developer Information
Developed by Codersy
About Codersy
Codersy is a specialized Shopify development agency focused on creating high-performance e-commerce solutions. We build custom Shopify stores, apps, and integrations that help businesses scale their online presence.
Our Expertise
- Custom Shopify theme development
- Shopify app development
- Headless commerce solutions
- Performance optimization
- SEO implementation
Contact Information
- Website: https://codersy.com
- Email: support@codersy.com
- Support: Available through app dashboard and email
Support & Resources
App Support
App support provided by Codersy.
Available Support Channels
- Email Support:support@codersy.com
- Installation Support:Available through Shopify admin panel
- Setup Guide:A two-step guide built into the app dashboard
- Documentation:Setup and usage guides
Support Levels by Plan
- Email support on every plan, including Free
- Priority support (Pro plan)
Response Times
- Free Plan: 48-72 hours
- Growth Plan: 24-48 hours
- Pro Plan: 12-24 hours priority support
Common Resources
- Setup guide for quick configuration
- Best practices guide for restock and waitlist strategy
- Troubleshooting documentation
- Feature request submission portal