# Send website leads to Estactics

Create a client each time someone fills in a form on your website.

When someone fills in a form on your website, your server can create a client in Estactics straight away.

## What you need

- An API key with the `clients.MANAGE` permission.
- A marketing campaign, if you want to see which campaign each lead came from. Its code is the `campaignCode`.

## Send the lead

Call [Create a client](/reference/clients-create) from your server, never from the browser:

```bash
curl --request POST \
  --url http://localhost:4000/api/clients/create \
  --header 'Authorization: Bearer YOUR_API_KEY' \
  --header 'Content-Type: application/json' \
  --data '{
    "firstName": "Alex",
    "lastName": "Morgan",
    "email": "alex.morgan@example.com",
    "phone": "+35799123456",
    "campaignCode": "x7Kq2p",
    "utmSource": "facebook",
    "throwErrorOnClientExists": false,
    "form": { "budget": "Up to 500,000" }
  }'
```

The response contains the `id` of the client.

## Phone numbers

Send the phone in international format, such as `+35799123456`, and Estactics works out the country. For a number with no dial code, also send `phoneDefaultCountry`.

## When the person already exists

Each email and phone can only belong to one client in your organization. By default, a second sign-up returns an error.

Set `throwErrorOnClientExists` to `false` to accept it instead. What happens next depends on your duplicate settings, which you can read and change with [Update client settings](/reference/clientssettings-update).

## Who gets the lead

With a `campaignCode`, the client goes to the team and agent set on that campaign. Without one, send `assignedToHierarchyId` to choose the team.

> [!TIP]
> The extra details in `form` and the UTM fields are only saved when you send a `campaignCode`.