# Mandrill ### Connection When you're setting up your first workflow with Mandrill, you'll need to add your API key so that Mandrill is a connected app within MESA. Mandrill is a paid Mailchimp add-on so you must have it [enabled in your Mailchimp account](https://mailchimp.com/help/add-or-remove-transactional-email/).

1\. You can locate your [API key](https://us4.admin.mailchimp.com/account/api/) by clicking your Account bubble, located at the top right on the Mailchimp Dashboard. Then, locate **Account and Billing** and click on it.

2\. Next, click on the **Extras** dropdown and select **API keys**.

3\. Scroll down until you see **Your API Keys** and click on **Create A Key**.

4\. Once you create an API key, copy the value via the **Copy to Clipboard** button**.**

5\. Then, paste that into your MESA's workflow's Mailchimp step and click on **Add Connection.** Afterwards, you are all set and you can re-use the newly created connection for your future workflows!