Hello. Is there an API that will allow you to create the email (i.e., mailing) itself? I would like to pass the HTML (body of email), email subject, and some other settings to the API.
This is certainly something that you can do, and you can find more information on this at Creating a Campaign. This will allow you to create an HTML or XHTML email, including the subject, body and a number of other fields. I hope this answers your question, please let us know if you have any others.