code: function(apiKey, contactId, fromName,
          fromAddress, toAddress, ccAddresses, bccAddresses, contentType,
          subject, htmlBody, textBody, header, receivedDate, sentDate,
          emailSentType) {}
docs: This will create an item in the email history for a contact. This does not actually send the email, it only places an item into the email history. Using the API to instruct Infusionsoft to send an email will handle this automatically.