Connect Mailchimp

Create an API key as described here: Generate your API key - Mailchimp
Get the server prefix: Log into your Mailchimp account and look at the URL in your browser. You’ll see something like us19.admin.mailchimp.com/ the us19 part is the server prefix.
Get the list/audience id where the leads should be added, as described here: Find audience id - Mailchimp
Send the Newsletter System name, the API key, the server prefix and the list id to Sovendus

Create an API key as described here: Generate your API key - Mailchimp
Get the server prefix: Log into your Mailchimp account and look at the URL in your browser. You’ll see something like us19.admin.mailchimp.com/ the us19 part is the server prefix.
Get the list/audience id where the leads should be added, as described here: Find audience id - Mailchimp
Send the Newsletter System name, the API key, the server prefix and the list id to Sovendus