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POPULARBUILT FOR SHOPIFY
4.9 ★ · 5.2k installs

Back in Stock Alerts

Per-variant waitlists that notify shoppers by WhatsApp, email or SMS the moment inventory lands — in the order they joined, with queue fairness built in.

No liquid editsWorks on OS 2.0 themesFree migration
What Back in Stock Alerts does
Per-variant waitlists that notify shoppers by WhatsApp, email or SMS the moment inventory lands — in the order they joined.
WhatsApp templates approved for India
Queue order respected
Revenue attributed per alert
Multi-location inventory aware
₹18L
recovered / qtr
46%
alert → purchase
₹18L
Recovered / quarter
Median across stores with 4+ waitlisted SKUs
46%
Alert → purchase
WhatsApp channel, India merchants
5 min
Median setup
Install to first waitlist button live
4.9 ★
App Store rating
Across 5,200 active installs
Features

Everything the app does, without the fluff.

What Back in Stock Alerts covers

Per-variant waitlists that notify shoppers by WhatsApp, email or SMS the moment inventory lands — in the order they joined, with queue fairness built in.

WhatsApp templates approved for India
Queue order respected
Revenue attributed per alert
Multi-location inventory aware
Back in Stock Alerts screenshot 2400×1050 · drop screenshot here
Setup

Live in three steps, about four minutes.

01
Install from the Shopify App Store

One click. The app reads your catalogue and current settings. No code, no theme backup needed.

Takes ~40 seconds
02
Pick your default channels

Set WhatsApp as the default for Indian traffic and email for AU/US, with SMS available as a shopper override at checkout of the waitlist form.

Takes ~3 minutes
03
Drop the block in your theme

Add the app block to your template in the theme editor, position it, and publish.

Takes ~1 minute
Pricing

Priced per store, not per pageview.

Switch to annual, save 20%
StarterSOLO
₹549/mo
A$15 · US$10 · billed monthly
Under 300 products and a single market. Everything essential, nothing you will not use.
300 products
1 market / language
Theme app block
Email support
14-day free trial
Choose Starter
GrowthMOST PICKED
₹1,299/mo
A$35 · US$23 · billed monthly
Up to 10,000 products, multi-market rules and full analytics. Where most stores land.
10,000 products
6 markets / languages
Revenue attribution
Klaviyo & Omnisend events
Priority chat, 1h median reply
Start free trial
ScalePLUS
₹3,199/mo
A$87 · US$57 · billed monthly
Unlimited catalogue, all markets, multi-store and API access.
Unlimited products
All markets & languages
Multi-store management
API + webhooks
Named CSM, 1h SLA
Choose Scale

What merchants say

★★★★★3 weeks ago

We run four App Club apps on a 9,000-SKU catalogue. Back in Stock alone pays for the whole stack every month.

Kalaa Studio · Jaipur, India
★★★★★6 weeks ago

Queue order respected properly for the first time — no more angry emails about who got the restock first.

Bondi Brew Co · Sydney, Australia
★★★★★2 months ago

WhatsApp templates were pre-approved, which saved us weeks versus building our own BSP integration.

Northfield Co · Austin, USA

Questions, answered

What happens if stock lands in more than one warehouse?

Alerts release per location as soon as that location's stock is confirmed, still respecting overall queue order and capped to available units.

Will this slow my storefront down?

No. Every widget renders as a theme app block with no render-blocking JavaScript — median added weight is under 6KB of HTML.

Do I have to edit theme code to install it?

No. Drop the app block into your Online Store 2.0 theme editor. Nothing is left behind if you uninstall.

Can you migrate my existing app's data?

Yes. Send an export or grant access and our team migrates it free, usually within one business day.

Which plan do I need for a large catalogue?

Growth covers most stores. Above 10,000 products, Scale removes the cap and adds multi-store management.