Subscribe form works as an e-mail newsletter.
To activate such form with an enabled MailChimp service, replace the
.rd-mailform
class with .mailchimp-mailform
and the form's action with
MailChimp
subscription URL.
To activate the Campaign Monitor service, you need to replace the form’s
[#code.rd-mailform] class with .campaign-mailform
and copy the form's action and the name
of
the input field from the form generated
by Campaign Monitor service.