You can connect your MailChimp account with your site and send newsletters to your customers or even add popup contact or newsletter forms on your website.

To enable MailChimp on your site, go to "" and then enable MailChimp add-on for your site. MailChimp

Once enabled, you can click on Settings for MailChimp or type in "" and add your MailChimp API key and MailChimp List ID. You can get them both by following the instructions there. mailchimp settings