How to Enable Back-in-Stock Alerts in Shopify Horizon Theme
Back-in-stock alerts let a shopper leave their email on a sold-out product and get notified automatically once it's restocked — a native Horizon feature.
Steps
- In your Shopify admin, go to Online Store > Themes and click Customize on Horizon.
- Open a product page and select the Buy buttons or Product information block.
- Find the back-in-stock (or "notify me") setting and turn it on.
- Confirm the notification email is configured — check Settings > Notifications for the relevant customer-facing template.
- Click Save.
This only appears automatically when a product is genuinely out of stock — you won't see it while previewing an in-stock product.
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