# How are Back-in-stock subscriptions and Subscribers list different?

The Back-in-stock alerts in FoxKit app offers instant notifications for shoppers when items are available and ready for purchase again. 🔔

You can also utilize this feature to capture shoppers' purchase intent and build your email list. 

## Back-in-stock subscriptions

**Back-in-stock subscriptions are customers who sign up for the back-in-stock (BIS) form** shown on your out-of-stock products.

![image](https://docs-assets.foxecom.app/foxkit-app/image_N8b5Dhpl.png)

Data collected via the BIS form can be saved in your Shopify customers list and/ or FoxKit subscriptions list.

 To find this setting, go to [**Back-in-stock** > **Form settings**](https://docs.foxecom.com/foxkit-app/upsells/back-in-stock-alerts#form-settings).

![image](https://docs-assets.foxecom.app/foxkit-app/image_yNbRuRzX.png)

<Hint type="warning">

If you activate email notifications for BIS (emails to be sent automatically when the product is re-stocked), **data collection to be saved in FoxKit subscriptions list is required**.

📬 Learn more about BIS email notifications: [Email settings](https://docs.foxecom.com/foxkit-app/upsells/back-in-stock-alerts#email-settings)

</Hint>

## FoxKit Subscribers list

Data of customers who **subscribe to your newsletter** ✉️ will be stored in FoxKit > **Subscribers**.

![image](https://docs-assets.foxecom.app/foxkit-app/image_iblKuJTD.png)

You will also find subscribers of FoxKit's [Pop-up](https://docs.foxecom.com/foxkit-app/sales-boosting/pop-up) and [Lucky wheel](https://docs.foxecom.com/foxkit-app/sales-boosting/lucky-wheel) there (if the feature's data collection is set as FoxKit subscribers list ✅) .