diff --git a/README.md b/README.md
index 5adac28..2c76ec2 100644
--- a/README.md
+++ b/README.md
@@ -73,6 +73,14 @@ Your balance:
 
 Please see the other examples for a complete overview of all the available API calls.
 
+Conversations WhatsApp Sandbox
+-------------
+To use the whatsapp sandbox you need to add `messagebird.Feature.ENABLE_CONVERSATIONS_API_WHATSAPP_SANDBOX` to the list of features you want enabled. Don't forget to replace `YOUR_ACCESS_KEY` with your actual access key.
+
+```python
+  client = messagebird.Client('1ekjMs368KTRlP0z6zfG9P70z', features=[messagebird.Feature.ENABLE_CONVERSATIONS_API_WHATSAPP_SANDBOX])
+```
+
 Documentation
 -------------
 Complete documentation, instructions, and examples are available at:
diff --git a/messagebird/__init__.py b/messagebird/__init__.py
index a25b3e7..10d9c79 100644
--- a/messagebird/__init__.py
+++ b/messagebird/__init__.py
@@ -1,2 +1,2 @@
-from messagebird.client import Client, ErrorException
+from messagebird.client import Client, ErrorException, Feature
 from messagebird.signed_request import SignedRequest
diff --git a/messagebird/client.py b/messagebird/client.py
index 671b2f3..143591f 100644
--- a/messagebird/client.py
+++ b/messagebird/client.py
@@ -1,6 +1,7 @@
 import sys
 import json
 import io
+import enum
 
 from messagebird.balance import Balance
 from messagebird.call import Call
@@ -19,6 +20,7 @@
 from messagebird.conversation_webhook import ConversationWebhook, ConversationWebhookList
 from messagebird.voice_recording import VoiceRecordingsList, VoiceRecording
 
+
 ENDPOINT = 'https://rest.messagebird.com'
 CLIENT_VERSION = '1.4.1'
 PYTHON_VERSION = '%d.%d.%d' % (sys.version_info[0], sys.version_info[1], sys.version_info[2])
@@ -26,6 +28,10 @@
 REST_TYPE = 'rest'
 
 CONVERSATION_API_ROOT = 'https://conversations.messagebird.com/v1/'
+CONVERSATION_API_WHATSAPP_SANDBOX_ROOT = 'https://whatsapp-sandbox.messagebird.com/v1/'
+
+
+
 CONVERSATION_PATH = 'conversations'
 CONVERSATION_MESSAGES_PATH = 'messages'
 CONVERSATION_WEB_HOOKS_PATH = 'webhooks'
@@ -44,23 +50,28 @@ def __init__(self, errors):
         message = ' '.join([str(e) for e in self.errors])
         super(ErrorException, self).__init__(message)
 
+class Feature(enum.Enum):
+        ENABLE_CONVERSATIONS_API_WHATSAPP_SANDBOX = 1
 
 class Client(object):
-    def __init__(self, access_key, http_client=None):
+
+    def __init__(self, access_key, http_client=None, features=[]):
         self.access_key = access_key
         self.http_client = http_client
+        
+        self.conversation_api_root = CONVERSATION_API_WHATSAPP_SANDBOX_ROOT if Feature.ENABLE_CONVERSATIONS_API_WHATSAPP_SANDBOX in features else CONVERSATION_API_ROOT
 
     def _get_http_client(self, type=REST_TYPE):
         if self.http_client:
             return self.http_client
 
-        if type == REST_TYPE:
-            return HttpClient(ENDPOINT, self.access_key, USER_AGENT)
-
+        if type == CONVERSATION_TYPE:
+            return HttpClient(self.conversation_api_root, self.access_key, USER_AGENT)
+       
         if type == VOICE_TYPE:
             return HttpClient(VOICE_API_ROOT, self.access_key, USER_AGENT)
 
-        return HttpClient(CONVERSATION_API_ROOT, self.access_key, USER_AGENT)
+        return HttpClient(ENDPOINT, self.access_key, USER_AGENT)
 
     def request(self, path, method='GET', params=None, type=REST_TYPE):
         """Builds a request, gets a response and decodes it."""