> For the complete documentation index, see [llms.txt](https://foxecom.gitbook.io/megamog-theme/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://foxecom.gitbook.io/megamog-theme/faq/how-are-back-in-stock-subscriptions-and-subscribers-list-different.md).
# 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. :bell:
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.
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**](/megamog-theme/upsells/back-in-stock-alerts.md#form-settings).
{% hint style="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**.
:mailbox\_with\_mail: Learn more about BIS email notifications: [Back-in-stock alerts](/megamog-theme/upsells/back-in-stock-alerts.md#email-settings)
{% endhint %}
## FoxKit Subscribers list
Data of customers who **subscribe to your newsletter** ✉️ will be stored in FoxKit > **Subscribers**.
You will also find subscribers of FoxKit's [Pop-up](/megamog-theme/sales-boosting/pop-up.md) and [Lucky wheel](/megamog-theme/sales-boosting/lucky-wheel.md) there (if the feature's data collection is set as FoxKit subscribers list :white\_check\_mark:) .