Step-1: Install the “MailChimp for WP” plugin. Then, see the “MailChimp for WP” option on the WordPress dashboard sidebar. Go to MailChimp for WP → MailChimp
Step-2: Connect your MailChimp account through the API key. If you don’t have a MailChimp API key. Register a MailChimp account after that you will get an API key.
Step-3: Automatically your MailChimp account will be connected to your dashboard.
Click Save Changes.
After that, you can see list information that is MailChimp data.
Step-4: If you want to create a MailChimp Form.
Click MailChimp for WP → Forms.
Step-5: You can create a signup form using HTML.
Step-6: Now, Click “Messages”.
You can see like the below photo where you can edit Successfully subscribed, Invalid email address, Already subscribed, Unsubscribed, etc messages.
Click Save Changes.
