> For the complete documentation index, see [llms.txt](https://docs.codemash.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.codemash.io/api-reference/notifications/contacts/unsubscribe-contact.md).

# Unsubscribe Contact

Notifications is Norbix's unified Email + Push + SMS messaging system — one template engine and data-binding context across all three channels, for both transactional sends and high-volume campaigns.

Handles the contact.

`POST /{version}/notifications/contacts/{contactId}/marketing-state/{channel}/unsubscribe`

{% hint style="info" %}
Full request/response reference will appear here once this endpoint is added to the API spec.
{% endhint %}

## In the dashboard

Manage this visually in Norbix Cloud — see [Notifications](/norbix-cloud/notifications.md).

## Use it from code

Every Norbix SDK exposes this endpoint as a method — see [Unsubscribe Contact](/sdks-and-cli/notifications/contacts/unsubscribe-contact.md) in the SDK reference, with examples in every language.