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Installation

Install Back in Stock and add the signup button to your storefront

Restock Alerts adds a "Notify me when available" button to your out-of-stock product pages. When you restock a product, your customers get an email automatically. Here's how to get it set up.

Install the App

If you haven't already, install Restock Alerts from the Shopify App Store. Once installed, you'll land on the app dashboard where a short setup guide walks you through getting the widget onto your storefront.

Add the Widget to Your Product Pages

The signup widget is a theme app block that lives on your product pages. The setup guide takes you directly to the right place:

  • Choose your theme — Select the theme your customers currently see. If you're testing, you can pick an unpublished theme first.
  • Add the widget — Click Add product widget. Your theme editor opens on a product template with the widget ready to place. Position it where you want it (under the Add to Cart button works well) and click Save.

That's it — there is no separate confirmation step. The app detects the widget on your theme automatically and the setup guide checks itself off.

The widget only appears when the selected variant is sold out, so it's safe to have on every product page. In the theme editor, the block's Button alignment setting controls whether the notify-me button sits left, centered, or right within its section.

Design Your Widget

The theme editor only places the widget. Everything about how it looks — popup or inline style, colors, button text, and the alert emails your customers receive — is customized in the app on the Design page. The setup guide's second step takes you straight there, and changes apply to your storefront instantly.

Verify It's Working

To check the widget is live:

  • Go to your storefront and open a product where at least one variant (size, colour, etc.) is sold out.
  • You should see a "Notify me when available" button in place of the Add to Cart button.
  • Click it — a form should appear asking for the customer's email address.

If the button isn't showing, see The Restock Button Is Not Showing.