> For the complete documentation index, see [llms.txt](https://docs.bunny.com/guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bunny.com/guide/tour/customer-management/campaigns.md).

# Campaigns

Campaigns are used to track how many contacts or leads are generated from a certain marketing effort. When a lead or contact is generated via the API, Bunny will use the `code` to adjust the count on the campaign.

<figure><img src="/files/gFVuuDZwf7EQVMNA6iVO" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
Note that the contacts and leads counts cannot be changed via the user interface, only via the API.
{% endhint %}

See more in the developer docs about [lead creation](https://docs.bunny.com/developer/api-reference/mutations/leadcreate) and [contact creation](https://docs.bunny.com/developer/api-reference/mutations/contactcreate).


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