> ## Documentation Index
> Fetch the complete documentation index at: https://docs.avina.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Contact Lists

> Automatically add signal-discovered contacts to lists in your CRM or sales engagement platform.

The **Contact List** destination adds contacts to a list on your connected platform whenever an automation triggers. Use this for campaign targeting, ad audience syncing, nurture segments, and more.

## How It Works

1. In the automation builder, select **Add to Contact List** as the action.
2. Choose the **platform** where the list lives (e.g., HubSpot, Apollo).
3. Select an existing list from the dropdown.
4. Save and activate.

When a signal fires and passes your filters, Avina automatically adds the enriched contact to the selected list.

## Use Cases

| Use Case              | Example                                                             |
| --------------------- | ------------------------------------------------------------------- |
| **Ad retargeting**    | Add high-intent visitors to a HubSpot list synced with LinkedIn Ads |
| **Nurture campaigns** | Route new hire signals to a drip campaign list                      |
| **SDR prospecting**   | Build a daily list of signal-qualified leads for manual outreach    |
| **Event follow-up**   | Collect contacts who engaged with event-related signals             |

## Supported Platforms

Contact lists are available on any connected platform that supports list management, including HubSpot and Apollo.

<Note>
  Contacts are deduplicated by email. If a contact already exists on the list, they won't be added again.
</Note>