My question consists of 2 parts, which will merge to one big feature-question.
What I am trying to achieve is send email addresses with other personalized fields (up to 30 that MailChimp limits) to MailChimp account through API's and specify a template for it to use. I have talked to a support team member through Live Chat and was told that this is possible. I need to be pointed to that portion of the documentation and find out how to do this. Also, I would like to use API calls to get list of unsubscribed emails, it would be nice where the unsubscribe email list call could specify which campaign they unsubscribed from.