For our Newsletter form, we use MailChimp – an excellent email marketing service that lets you design, send, and track HTML email campaigns. How to setup MailChimp? To setup your Mailchimp sign-up form, please do following steps: 1. If you haven’t done this already, you will have to install the MailChimp Widget plugin. The go to Mailchimp for WP > Mailchimp section in the admin panel menu. 2. Add your API key to MailChimp API key field (use Get your API key here link to obtain your key). 3. Save Changes 4. Please read This article for further detailed instructions. Edit Newsletter Form To edit the Newsletter Form, go to MailChimp for WP > Form tab.