MailChimp for WordPress
Subscribe your WordPress site visitors to your MailChimp lists, with ease.
The plugin is integrated into the theme so after theme activation you will be asked to install it. Or course this doesn't mean you have to use it. If you prefer other newsletter solution, feel free to use it. More info about switching to other newsletter plugin can be found below.
After activating the plugin, its configuration page will be accessible in the WP Admin › Mailchimp for WP page.
For more information, please refer to the officail plugin page.
If you want to change default phrases, like "No spam. Unsubscribe at any time." or avatars,
you can do that via WordPress Admin › Appearance › Customize › Plugin Integrations › Mailchimp for WP section.
As any other plugin from wordpress.org site, if new version of the plugin is available, you will be notified about it.