Newsletter subscription is powered by Mailchimp
The subscribe box can be enabled on the homepage and blog posts by adding your Mailchimp form URL to the _data/site.yml
# _data/site.yml
newsletter:
mailchimp:
form_action_url: https://zerostatic.us21.list-manage.com/subscribe/post?u=798e19886b83aaab346734382&id=f1c526a772&f_id=0027e3e6f0
form_title: "Let's keep in touch"