You can send your EPICA audiences to mailchimp and thus generate more accurate campaigns, the first step is to generate the key in your mailchimp account by following the steps below:
Click on the icon next to your account name and select "Account"
Then, click on "Extras" -> Api Keys
If you don't have already a key, Select “Create a Key”
Check the new API Key in the bottom of the page.
Once obtained, send it to the associated client partner for the subsequent activation.
Check out the link below for full details:
When you have the key, send it to the EPICA client partner. He will activate mailchimp service in your EPICA account