Mailchimp :

• Title :You can Enter the title.
• Select a Mailing List : You can select a mailing list.
• Sign Up Button Text : Enter the text to sign up mail.
• Personal Information : Choose the Personal Information. like Collect first name/Collect last name.
• Notification You can enter the sub title
• Success Message : Enter the text Success to display on post.
• Failure Message :Enter the text Failure to display on post.