This plugin lets your users sign up for your Mailchimp lists and groups via subscription form added through widget or shortcode.
Based on jameslafferty “Mailchimp Widget” plugin.

Shortcode example:

[mp-mc-form list=”list_id/group_id” button=”Subscribe” email_text=”Your E-mail” first_name_text=”First Name” last_name_text=”Last Name” placeholder=”true” firstname=”false” lastname=”false” success=”Thank you for joining our mailing list.” failure=”There was a problem processing your submission.” ]

Shortcode attributes:

• list – Mailchimp list_id or list_id/group_id if you want to subscribe to specific group. To subscribe to several lists and groups separate them by comma.
• button – button label
• email_text – label of the email address field
• first_name_text – label of the first name field
• last_name_text – label of the last name field
• placeholder – true or false; set true to display labels as placeholders;
• firstname – true or false; set true if first name is required;
• lastname – true or false; set true if last name is required;
• success – success message;
• failure – failure message;