When you click **+ Add List** and choose a platform, the app asks for that platform's key and, for most platforms, which list to track. Click **How to get these credentials** in the window to see these steps right where you need them.

Platforms move their menus around from time to time. If a menu name below doesn't match, look for "API" or "Developer" in your account settings.

## Mailchimp

The app asks for your **API Secret**, then your **Audience**.

1. Log in to Mailchimp and click your profile icon, then **Account & billing**.
2. Go to the **Extras** tab and click **API keys**.
3. Click **Create A Key** and copy it.
4. Paste it into **API Secret**, click **Find Audiences**, and choose your audience.

Mailchimp keys end with a dash and a short code such as "-us21". Copy the whole key, including that ending.

## Kit

The app asks for an **API Key** only. Kit tracks your whole account rather than one list.

1. Log in to Kit and go to **Account Settings**, then **Developer** (app.kit.com/account_settings/developer_settings).
2. Click **Add a new key**, give it a name, and copy it.

This is a v4 API key. There's no app authorization step.

## MailerLite

The app asks for an **API Token** only. MailerLite tracks your whole account.

1. Log in to MailerLite and go to **Integrations**.
2. Choose **MailerLite API**.
3. Click **Generate new token**, name it, and copy it.

## Beehiiv

The app asks for an **API Key** and a **Publication ID**.

1. Log in to Beehiiv and open **Settings**, then **Integrations**, then **API**, and create or copy your API key.
2. Find your Publication ID in your publication settings, or in the address bar when you're viewing that publication. It starts with "pub_".

## EmailOctopus

The app asks for an **API Key**, then your **List**.

1. Log in to EmailOctopus and go to **Account Settings**, then **API Keys** (emailoctopus.com/developer/api-keys).
2. Generate a new key and copy it.
3. Paste it in, click **Find Lists**, and choose your list. You don't need to look up a list ID.

## Sendy

Sendy is installed on your own server, so the app asks for an **Installation URL**, an **API Key** and a **List ID**.

1. **Installation URL**: your Sendy address, for example https://send.yoursite.com. It must start with https:// and have no slash at the end.
2. **API Key**: log in to your Sendy installation and go to **Settings**, then **General**.
3. **List ID**: on Sendy's **View all lists** page, copy the encrypted ID shown next to the list.

## Sendfox

The app asks for an **Access Token**, then your **List**.

1. Log in to Sendfox and open **Settings**, then **Connections**, then **API tokens** (sendfox.com/account/oauth).
2. Click **Create New Token**, name it, and copy it. Sendfox shows it only once.
3. Paste it in, click **Find Lists**, and choose your list.

Sendfox's API is only available on paid Sendfox plans.

## Flodesk

The app asks for an **API Key**, then your **Segment**. In Flodesk, a segment works as the list.

1. Log in to Flodesk and open **Account**, then **Integrations**, then **API keys** (app.flodesk.com/account/integrations).
2. Click **Create API key**, name it, and copy it.
3. Paste it in, click **Find Segments**, and choose the segment.

Flodesk reports subscriber counts only, not open or click rates.

## Brevo

The app asks for an **API Key**, then your **List**.

1. Log in to Brevo and open the **API keys** page (app.brevo.com/settings/keys/api). It's under SMTP & API in your account or organisation settings.
2. Click **Generate a new API key** and name it.
3. Set **Contacts** to **All** and **Email campaigns** to **Read**. Leave everything else on None.
4. Copy the key. Brevo shows it only once.
5. Paste it in, click **Find Lists**, and choose your list.

## After you paste the key

Click **Connect List**. The app checks the key with the platform before saving. If something is wrong you'll see the platform's error in red. See the troubleshooting article for what each message means.