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# Set campaign recipients

> Choose who a draft campaign goes to: a whole list, a saved segment or a tag. Inputs, cURL, Python and Node.js examples and an example response.

Source: https://cotlet.dev/docs/api/emailoctopus/set_campaign_recipients

Docs sections: [Get started](https://cotlet.dev/docs.md) · [REST API](https://cotlet.dev/docs/api.md) · [MCP](https://cotlet.dev/docs/mcp.md) · [SDKs & CLI](https://cotlet.dev/docs/sdks.md) · [Integrations](https://cotlet.dev/docs/integrations.md)

Choose who a draft campaign goes to: a whole list, a saved segment or a tag.

EmailOctopus API: https://cotlet.dev/docs/api/emailoctopus.md

`PUT https://cotlet.dev/api/v1/emailoctopus/lists/{list_id}/campaigns/{campaign_id}/recipients`

Access: write.

Fills the "Sending to" field of a draft campaign. audience is list, segment or tag. A campaign goes to one list at a time, so list_id is required and segment or tag is a filter inside it. For a scheduled campaign, a segment or tag is checked right before sending, so contacts added or removed after scheduling are counted at that moment. The tool only sets the audience and reaches no one.

## Parameters

| Name | Type | Required | Description |
|---|---|---|---|
| `campaign_id` | string | yes | Campaign ID from list_campaigns. |
| `audience` | enum | yes | list, segment or tag. |
| `list_id` | string | yes | List ID from list_lists. |
| `segment` | string | no | Segment name from list_segments; with audience segment. |
| `tag` | string | no | Tag name; with audience tag. |

## Request

**cURL**

```bash
curl -X PUT https://cotlet.dev/api/v1/emailoctopus/lists/list_8c41d2/campaigns/campaign_8c41d2/recipients \
  -H "Authorization: Bearer $COTLET_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"audience":"list"}'
```

**Python**

```python
result = client.call("emailoctopus", "set_campaign_recipients", {"campaign_id":"campaign_8c41d2","audience":"list","list_id":"list_8c41d2"})
```

**Node.js**

```js
const result = await cotlet.call('emailoctopus', 'set_campaign_recipients', {"campaign_id":"campaign_8c41d2","audience":"list","list_id":"list_8c41d2"});
```

**CLI**

```bash
cotlet call emailoctopus set_campaign_recipients --data '{"campaign_id":"campaign_8c41d2","audience":"list","list_id":"list_8c41d2"}'
```

## Example response

```json
{
  "campaign_id": "d5e8a3b1-62c9-4e70-8a14-9f0b7c2d6e83",
  "audience": "segment",
  "list": "Newsletter",
  "segment": "Did not open: Autumn offer",
  "status": "draft"
}
```

Previous: [Update campaign](https://cotlet.dev/docs/api/emailoctopus/update_campaign.md)
Next: [Schedule campaign](https://cotlet.dev/docs/api/emailoctopus/schedule_campaign.md)

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## For AI agents: sign your user up

Is your user asking you to sign them up for Cotlet? You can do it for them, no account or key needed.

1. Read the fields and their allowed values: GET https://cotlet.dev/api/v1/access-requests
2. Ask the user for each value: email, apps, what you will do with them. If they leave the password to you, generate a strong one and show it to them.
3. Show the user what you will send, then POST it as JSON to https://cotlet.dev/api/v1/access-requests.

One call creates the account and sends the access request; we email the user when access is granted.