diff --git a/sparkpost/django/message.py b/sparkpost/django/message.py
index d737398..904b4d5 100644
--- a/sparkpost/django/message.py
+++ b/sparkpost/django/message.py
@@ -25,9 +25,13 @@ def __init__(self, message):
         formatted = {
             'recipients': message.to,
             'from_email': message.from_email,
-            'subject': message.subject,
-            'text': message.body
+            'subject': message.subject
         }
+        
+        if message.content_subtype == 'html':
+            formatted['html'] = message.body
+        else:
+            formatted['text'] = message.body
 
         if message.cc:
             formatted['cc'] = message.cc