In this guide, we’ll walk through how to pull data from the Mailchimp API directly into Google Sheets, using the free API Connector add-on. We’ll first get an API key from Mailchimp, and then set up a request to pull in email campaign details from your Mailchimp account to your spreadsheet.

PART 1: GET YOUR MAILCHIMP API KEY

1. Log into your Mailchimp account and navigate to the API Keys section via this link: https://us1.admin.mailchimp.com/account/api/
2. Click the Create A Key button
   
3. You’ll now see your API key listed in a section titled “Your API keys”
   
4. Congrats, that’s it! You now have access to the Mailchimp API, and can start pulling Mailchimp data into Google Sheets.

PART 2: CREATE YOUR API REQUEST

We’re going to follow the Mailchimp API documentation to retrieve information about members in an email list.

Mailchimp base URL: https://us{data_center_ID}.api.mailchimp.com/3.0
Example: https://us20.api.mailchimp.com/3.0/

Endpoint: /lists/{list_id}/members
Example: /lists/32d8e317e4/members

Putting it all together, we get the full API Request URL:
https://us20.api.mailchimp.com/3.0/lists/32d8e317e4/members

Of course, you’ll need to substitute in your own values for {data_center} and {list_id}, which you can find as follows:
* Find your {data_center_ID} by checking the URL when you’re logged in to your Mailchimp account

* Find your {list_id} by navigating to Settings > Audience Name and Defaults. Once you click this, you’ll see your list ID (which they’ve now begun calling an “Audience ID”).

We’re now ready to enter all our values into API Connector to start importing Mailchimp data into Google Sheets.

1. Open up Google Sheets and click Add-ons > API Connector >  Create New API Request
2. In the Create Request interface, enter the Request URL we just created
   
3. Under Headers, enter a key-value pair like this. Make sure to use your own API key (the API key in this tutorial has already been deleted):
   

   Authorization

   apikey {your API key}

   It should look like this:
   

4. Create a new tab. You can call it whatever you like, but here we’ll call it ‘Mailchimp’. While still in that tab, click ‘Set’ to use that tab as your data destination.
5. Name your request. Again we’ll call it ‘Mailchimp’
6. Click Run and a moment later you’ll see your Mailchimp data populate the Mailchimp tab in your Google Sheet:
   
7. If you want to see other data, like a list of campaigns, you’d just change the endpoint. For example, https://us20.api.mailchimp.com/3.0/campaigns will give you a list of your campaigns. The Mailchimp API Playground is a great resource to test out different API calls.

Following the above steps, you will now be able to import data from the Mailchimp API directly into Google Sheets. By setting Google Sheets as a data source, you can also use this method to create Mailchimp data visualizations and dashboards in Google Data Studio.