diff --git a/FlowrouteMessagingLib/Configuration.py b/FlowrouteMessagingLib/Configuration.py
index e188840..39962d8 100644
--- a/FlowrouteMessagingLib/Configuration.py
+++ b/FlowrouteMessagingLib/Configuration.py
@@ -3,10 +3,10 @@
 """
    FlowrouteMessagingLib.Configuration
 
-    Copyright Flowroute, Inc. 2016
+    Copyright Flowroute, Inc. 2021
 """
 
 
 class Configuration(object):
     # The base Uri for API calls
-    BASE_URI = "https://api.flowroute.com/v2"
+    BASE_URI = "https://api.flowroute.com/v2.1"
diff --git a/FlowrouteMessagingLib/Controllers/APIController.py b/FlowrouteMessagingLib/Controllers/APIController.py
index 643bbb1..ea3447d 100644
--- a/FlowrouteMessagingLib/Controllers/APIController.py
+++ b/FlowrouteMessagingLib/Controllers/APIController.py
@@ -5,6 +5,7 @@
     Copyright Flowroute, Inc. 2016
 """
 import requests
+from requests.auth import HTTPBasicAuth
 
 from FlowrouteMessagingLib.APIHelper import APIHelper
 from FlowrouteMessagingLib.Configuration import Configuration
@@ -24,7 +25,7 @@ def __init__(self, username, password):
         self.__username = username
         self.__password = password
 
-    def create_message(self, message) -> dict:
+    def create_message(self, message):
         """Does a POST request to /messages.
 
         Send a message.
@@ -49,21 +50,22 @@ def create_message(self, message) -> dict:
         query_builder += "/messages"
 
         # Validate and preprocess url
-        query_url = APIHelper.clean_url(query_builder)
+        _query_url = APIHelper.clean_url(query_builder)
 
         # Prepare headers
-        headers = {
-            "user-agent": "Flowroute Messaging SDK 1.0",
-            "content-type": "application/json; charset=utf-8",
+        _headers = {
+            'accept': 'application/vnd.api+json',
+            'content-type': 'application/vnd.api+json; charset=utf-8'
         }
 
-        # Prepare and invoke the API call request to fetch the response
-        response = requests.post(
-            url=query_url,
-            headers=headers,
-            data=APIHelper.json_serialize(message),
-            auth=(self.__username, self.__password))
+        # Prepare and execute request
+        response = requests.post(_query_url,
+                                 headers=_headers,
+                                 auth=HTTPBasicAuth(self.__username, self.__password),
+                                 data=APIHelper.json_serialize(message))
+
         json_content = APIHelper.json_deserialize(response.content)
+        print("Resp: {}".format(response.json()))
 
         # Error handling using HTTP status codes
         if response.status_code == 401:
@@ -78,7 +80,7 @@ def create_message(self, message) -> dict:
 
         return json_content
 
-    def get_message_lookup(self, record_id: str) -> dict:
+    def get_message_lookup(self, record_id):
         """Does a GET request to /messages/{record_id}.
 
         Lookup a Message by MDR.
diff --git a/FlowrouteMessagingLib/Models/Message.py b/FlowrouteMessagingLib/Models/Message.py
index 94a677f..a93498d 100644
--- a/FlowrouteMessagingLib/Models/Message.py
+++ b/FlowrouteMessagingLib/Models/Message.py
@@ -28,12 +28,16 @@ def __init__(self, **kwargs):
         self.to = None
         self.mfrom = None
         self.content = None
+        self.is_mms = False
+        self.media_urls = []
 
         # Create a mapping from API property names to Model property names
         replace_names = {
             "to": "to",
             "from_": "mfrom",
             "content": "content",
+            "is_mms": "is_mms",
+            "media_urls": "media_urls"
         }
 
         # Parse all of the Key-Value arguments
@@ -61,6 +65,8 @@ def resolve_names(self):
             "to": "to",
             "mfrom": "from",
             "content": "content",
+            "is_mms": "is_mms",
+            "media_urls": "media_urls"
         }
 
         retval = dict()
diff --git a/demo_send.py b/demo_send.py
index 09331d6..3e298d0 100644
--- a/demo_send.py
+++ b/demo_send.py
@@ -21,14 +21,14 @@
 from FlowrouteMessagingLib.Models.Message import *
 
 # Set up your API credentials
-# Please replace the variables in Configuration.php with your information.
-username = os.getenv('ACCESS_KEY')
-password = os.getenv('SECRET_KEY')
-from_number = os.getenv('FROM_E164')
-to_number = os.getenv('TO_E164')
+# Please replace the variables with your information.
+username = 'YOUR-ACCESS-KEY'
+password = 'YOUR-SECRET-KEY'
+from_number = 'YOUR-MESSAGE-ENABLED-FLOWROUTE-DID'
+to_number = 'RECIPIENT-DID'
 
 # Print the demo script header.
-print("Flowroute, Inc - Demo SMS Python script.\n")
+print("Flowroute, Inc - Demo SMS / MMS Python script.\n")
 if username is None or password is None or from_number is None or to_number is None:
     print("To operate this script, please set the environment variables as follows:")
     print("'ACCESS_KEY'=Your account tech_prefix")
@@ -42,15 +42,17 @@
 pprint.pprint(controller)
 
 # Build your message.
-message = Message(to=to_number, from_=from_number, content='Your cool new SMS message here!')
+txtMessage = Message(to=to_number, from_=from_number, content='Your cool new SMS message here!',
+                     media_urls=[], is_mms=False, dlr_callback=None)
 
 # Send your message.
 try:
-    response = controller.create_message(message)
+    print("Sending SMS")
+    response = controller.create_message(txtMessage)
     pprint.pprint(response)
-except APIException as e:
-    print("Send Error - " + str(e.response_code) + '\n')
-    pprint.pprint(e.response_body['errors'])
+except Exception as e:
+    print("Send Error - " + str(e) + '\n')
+    # pprint.pprint(e.response_body)
     exit(1)        # can't continue from here
 
 # Get the MDR id from the response.
@@ -70,3 +72,27 @@
     print("MDR Retrieval Error - {} - {}".format(str(e.response_code), e.response_body))
     pprint.pprint(e.response_body['errors'])
     exit(2)
+
+# Now send an MMS message
+# -- Specify a publicly available image or media clip to send
+image_url = 'https://developer.flowroute.com/theme/images/developers_logo_article_2x.png'
+# -- If you have a server that can accept a POST message for a Delivery receipt, you can specify it here
+dlr_page = None
+# -- Specify the text message to go along with the media
+text_content = 'A Flowroute Logo'
+pictureMessage = Message(to=to_number, from_=from_number,
+                         content=text_content,
+                         media_urls=[image_url],
+                         is_mms=True,  # Required for MMS messages
+                         dlr_callback=dlr_page)
+
+# Send your message.
+try:
+    response = controller.create_message(pictureMessage)
+    pprint.pprint(response)
+except APIException as e:
+    print("Send Error - " + str(e.response_code) + '\n')
+    pprint.pprint(e.response_body['errors'])
+    exit(1)        # can't continue from here
+
+# Note: MMS messages do NOT have an MDR.