Back-in-Stock & Price-Drop Alerts

Key Features

"Notify me when in stock" subscription block injected into product (PDP) and category (PLP) pages via theme layout XML — guest (email-only) and logged-in customer flows

Price-drop alert subscriptions: shoppers set an optional target price; alerts fire when the product price (incl. catalog/special price rules) falls to or below their threshold

Event-driven restock detection via plugins/observers on cataloginventory_stock_item_save_after and catalog_product_save_after — no constant DB polling

Adobe Commerce MSI aware: evaluates salable quantity across multiple sources and websites, respecting stock-to-website assignment (not just legacy single-stock qty)

Multi-channel delivery layer — transactional email, SMS (your gateway: Twilio / MSG91 / etc.), and web push — implemented behind a pluggable channel interface

Cron-based async dispatch with batching and per-run caps so a large restock never blocks a product save or overruns your mail/SMS provider

Low-stock admin alerts when salable qty drops below a configurable threshold, plus a 'most-wanted out-of-stock' demand report to guide reordering

Admin subscriber grid (UI component listing) with search/filter/export, gated by dedicated admin ACL resources under Stores > Configuration

Service contracts (PHP interfaces) for subscription create/read/cancel so the logic is reusable and unit-testable

REST + GraphQL coverage so PWA Studio / headless storefronts can create subscriptions and query subscription state for the logged-in customer

Double opt-in option and one-click unsubscribe links for GDPR/PECR-friendly consent and deliverability

Store-view / locale aware: templates, sender identity, and SMS copy resolve per store view across your full language matrix

Built to order, done for you

No DIY setup — a working app, built, installed and supported by ECOSIRE.

You order

Start with a one-time build price. We scope it with you at kickoff.

We build & install

ECOSIRE builds, configures and installs it on your Magento 2.

Go live + support

You go live in about 2–4 weeks, with a post-launch support window.

About this Product

Every time a shopper hits an out-of-stock product and leaves, that demand evaporates — Magento Open Source and Adobe Commerce ship no native back-in-stock capture and no price-drop alerting out of the box. This extension closes that gap.

Back-in-Stock & Price-Drop Alerts is a custom Magento 2 module (Ecosire_StockAlerts, installed under app/code or via Composer) that adds a "Notify me" subscription to product and category pages. Guests subscribe with just an email; logged-in customers subscribe with one click against their account. The module persists subscriptions in dedicated tables and reacts to real catalog events.

Restock detection is event-driven, not polling-based: a plugin (interceptor) on the stock/source-item save path plus observers on cataloginventory_stock_item_save_after and catalog_product_save_after detect when a salable quantity crosses back above zero or a price falls below a subscriber's threshold. Matching subscribers are queued and dispatched via cron so a flash restock never blocks a save or floods your mail queue. Notifications go out over email (transactional templates you control), SMS, and web/push through a pluggable channel layer.

Because it's built to order, ECOSIRE adapts it to your reality: Adobe Commerce MSI multi-source/multi-website salable-quantity logic, your SMS gateway (Twilio, MSG91, or another), your theme's PDP/PLP markup, and your store-view/locale matrix. Admins get low-stock alerts, a subscriber grid behind proper admin ACL, and REST + GraphQL endpoints so headless/PWA Studio frontends can subscribe and read state.

You are not buying an anonymous Marketplace ZIP. ECOSIRE writes it against service contracts and DI, installs it on your Magento instance (staging first), runs setup:upgrade/di:compile, and supports it after go-live.

What you get

Custom Magento 2 module (e.g. Ecosire_StockAlerts) delivered as source under app/code or as a private Composer package, with composer.json, module.xml, di.xml, and declarative schema (db_schema.xml)

Frontend subscription UI (PDP + PLP blocks) integrated into your theme, plus transactional email templates, SMS templates, and push payloads in your branding and locales

REST and GraphQL API endpoints with documentation for headless/PWA Studio consumption

Admin configuration section, subscriber grid, ACL resources, and the low-stock / demand report wired into the Magento admin

Installation on your staging environment (setup:upgrade, setup:di:compile, setup:static-content:deploy) and a guided promotion to production

Setup & admin guide plus a short handover covering SMS-gateway config, cron, channel toggles, and how to extend the channel layer

Who this is for

Catalog-heavy retailer with frequent stockouts

Runs hundreds or thousands of SKUs where popular items routinely sell out. Wants to capture the demand that walks away on an out-of-stock PDP and convert it automatically the moment inventory is replenished.

Merchandising / inventory manager

Needs hard signal on which out-of-stock products shoppers actually want, plus low-stock alerts to drive reordering — instead of guessing from gut feel or stale reports.

Adobe Commerce store on PWA Studio / headless

Operates a decoupled storefront and needs subscribe-and-notify exposed cleanly over GraphQL/REST with MSI multi-source salable-quantity logic, not a Luma-only theme hack.

How Back-in-Stock & Price-Drop Alerts Compares

Criterion	ECOSIRE	Custom Build	Competitor
Back-in-stock 'notify me' capture on out-of-stock PDP	Included	Partial support	Included
Price-drop alert subscriptions with shopper-set target price	Included	Partial support	Partial support
Multi-channel delivery (email + SMS + push)	Included	Partial support	Partial support
Adobe Commerce MSI multi-source / multi-website salable-qty awareness	Included	Partial support	Partial support
REST + GraphQL coverage for headless / PWA Studio	Included	Partial support	Not included
Tailored to your exact theme, gateways, and store-view matrix	Included	Included	Not included
Instant self-service Marketplace download	Not included	Not included	Included
Built, installed, and supported on your store by the vendor	Included	Partial support	Not included

Frequently Asked Questions about Back-in-Stock & Price-Drop Alerts

Is this an instant download from the Adobe Commerce Marketplace?

No. This is a build-to-order extension. ECOSIRE writes the module against your Magento 2 / Adobe Commerce version, theme, inventory setup, and SMS/push gateways, then installs and configures it on your store. There is no anonymous Marketplace ZIP and no auto-install link — you get source code and a working, supported deployment.

How long does delivery take, and what does the process look like?

A standard build typically takes around 1 to 2 weeks from kickoff, depending on your Magento version, theme complexity, MSI/multi-website setup, and which channels (email/SMS/push) you enable. The flow is: scoping call, build, install and test on your staging environment, your sign-off, then a guided production deployment (setup:upgrade, di:compile, static-content:deploy). Timelines firm up once we see your environment.

Does it work on both Magento Open Source and Adobe Commerce, including multi-source inventory (MSI)?

Yes. The core subscription and price-drop logic runs on Magento Open Source. On Adobe Commerce we additionally honor MSI — evaluating salable quantity across multiple sources and websites and respecting stock-to-website assignment — so a restock at the relevant source is what triggers alerts, not a misleading global qty.

How does it detect restocks without slowing down my store?

Detection is event-driven. Plugins/interceptors and observers on Magento's stock and product save events flag when salable quantity crosses back above zero or a price drops below a subscriber's threshold. Actual notification sending is offloaded to cron and dispatched in batches, so saving a product or running a bulk import never blocks on email/SMS sending or floods your provider.

What about ongoing support and updates after launch?

Because ECOSIRE builds the module, we support it. Bug fixes for the delivered scope are covered, and we offer ongoing maintenance to keep it compatible as you apply Magento security patches and minor/major upgrades. Functional changes (new channels, new rules, redesigned UI) are scoped as enhancements. You also hold the source code, so you are never locked to a vendor that might delist a Marketplace listing.