We want to use Constant Contact to send communications, instead of the Membership Communications, which do not work.
As a result, I want to ping Constant Contact when someone signs up for membership. However, when registering for their API, all we get is a Key and a Secret. How do we use this? Or is there a guide for integrating Constant Contact?
Basically, I am looking for the equivalent of this: http://us2.api.mailchimp.com/1.3/?method=listSubscribe