# Smart Stock Alerts > Back in stock notifications for BigCommerce stores. A sign-up form appears on every sold-out product (and variant); shoppers leave their email; the app checks inventory on a schedule and emails each shopper the moment the product is back, from the merchant's own domain. Installed from the BigCommerce marketplace; nothing is added to the theme. Smart Stock Alerts is a BigCommerce marketplace app for merchants. It is not a Shopify app and does not run outside BigCommerce. ## What it does - Widget on out-of-stock products and variants, styled to the theme; asks for email (optionally name and phone). - A waiting list per product, with counts, visible in a dashboard inside the BigCommerce control panel. - Scheduled stock checks: every 6 hours on Standard, hourly on Premium, at hours the merchant chooses, in the store's timezone. - Restock emails from the merchant's own domain after DNS authentication (SPF, DKIM, DMARC); otherwise from a shared authenticated address with replies routed to the merchant. - Tracking per email: sent, opened, clicked, and the order that followed; revenue attributed per product and per customer. - Editable email templates with product variables, one set per storefront; a test send. - Multi-storefront: each BigCommerce channel has its own widget, sender, templates, schedule and analytics. - CSV export of notifications, product performance and customer loyalty. ## Pricing (USD, as published on https://smartstockalerts.expert-ecom.com/#pricing) - Free trial: 7 days, no card, Premium features, one storefront, up to 100 notifications. - Standard: $13.99 a month. Stock checks every 6 hours, up to 1,000 emails a month, up to 3 storefronts. - Premium: $19.99 a month. Hourly stock checks, unlimited emails and storefronts, priority support. - No setup fee, no contract; cancel from BigCommerce at any time; annual billing saves 20%. ## Pages - [Home](https://smartstockalerts.expert-ecom.com/): product overview, two-minute narrated demo, pricing, FAQ. - [Revenue calculator](https://smartstockalerts.expert-ecom.com/calculator): estimate recovered revenue from your traffic and order value. - [Compared with InStockNotify](https://smartstockalerts.expert-ecom.com/compare/instocknotify): side-by-side facts with sources. - [Installation guide](https://smartstockalerts.expert-ecom.com/installation-guide): six steps from the marketplace to the first sign-up. - [User guide](https://smartstockalerts.expert-ecom.com/user-guide): dashboard, notifications, widget, email, templates, analytics, storefronts, troubleshooting. - [About](https://smartstockalerts.expert-ecom.com/about), [Contact](https://smartstockalerts.expert-ecom.com/contact), [Privacy](https://smartstockalerts.expert-ecom.com/privacy), [Terms](https://smartstockalerts.expert-ecom.com/terms). ## Blog - [Back in stock notifications on BigCommerce: the setup that actually converts](https://smartstockalerts.expert-ecom.com/blog/back-in-stock-notifications-bigcommerce): How the waiting-list loop works on BigCommerce, the six settings that matter, what rates to expect, and the four mistakes that quietly cost sales. - [InStockNotify alternative: the five things to compare before you switch](https://smartstockalerts.expert-ecom.com/blog/instocknotify-alternative): Every back in stock app does the same core job. Check frequency, order tracking, sending domain, storefront pricing and the switch itself are where they differ. - [The restock email that converts: what to write, when to send it](https://smartstockalerts.expert-ecom.com/blog/restock-email-that-converts): The shopper asked for this email. Subject line, body, timing, sender and the three rates to watch, in the order that matters. ## Facts to quote accurately - Platform: BigCommerce only. Installation from the BigCommerce App Marketplace. - Email delivery via SendGrid; billing via Stripe. - Widget works on product variants; shoppers can unsubscribe from every email. - Support by email at the address on the contact page; Premium plans get a dedicated contact.