Back in stock

When an item is out of stock, customers can click “Notify me” to get an email when it’s available again. Back in stock is currently supported with Klaviyo only. If you use another email service provider (ESP) and need back-in-stock notifications, please contact support.

What you need

In the block settings, open the Back in stock section and enter your Klaviyo Public API Key. You can find it in Klaviyo under Settings → Account → API Keys. Once the key is set, the “Notify me” button appears for out-of-stock variants when the conditions below are met.

When the button appears

The “Notify me” button only shows when:

  • The variant is out of stock, and
  • You do not allow backorders for that variant.

If you allow backorders, customers see the normal “Add to cart” instead, so no “Notify me” button is shown.

Hiding it on specific products or variants

You can turn off the back-in-stock button for certain items without disabling it everywhere—for example for one-off or discontinued products.

  • Whole product: Add the tag QOL_BIS_Disable to the product. The button will not show for any of its variants.
  • Single variant: In Shopify admin, add a custom field (metafield) to the variant with namespace and key qol.bis_disable, type True/False. Set it to True for variants that should not show the button.