diff --git a/mixpanel/__init__.py b/mixpanel/__init__.py
index d93a1cb..93a74cf 100644
--- a/mixpanel/__init__.py
+++ b/mixpanel/__init__.py
@@ -62,9 +62,15 @@ class Mixpanel(object):
         The *serializer* parameter.
     """
 
-    def __init__(self, token, consumer=None, serializer=DatetimeSerializer):
+    def __init__(self, token, consumer=None, serializer=DatetimeSerializer, sync_consumer=None):
         self._token = token
         self._consumer = consumer or Consumer()
+
+        if hasattr(self._consumer, "flush"):
+            self._sync_consumer = sync_consumer or Consumer()
+        else:
+            self._sync_consumer = self._consumer
+
         self._serializer = serializer
 
     def _now(self):
@@ -185,8 +191,7 @@ def alias(self, alias_id, original, meta=None):
         if meta:
             event.update(meta)
 
-        sync_consumer = Consumer()
-        sync_consumer.send('events', json_dumps(event, cls=self._serializer))
+        self._sync_consumer.send('events', json_dumps(event, cls=self._serializer))
 
     def merge(self, api_key, distinct_id1, distinct_id2, meta=None, api_secret=None):
         """
diff --git a/test_mixpanel.py b/test_mixpanel.py
old mode 100644
new mode 100755
index 0275eba..7d3ba36
--- a/test_mixpanel.py
+++ b/test_mixpanel.py
@@ -309,26 +309,16 @@ def test_people_meta(self):
 
 
 class TestMixpanelIdentity(TestMixpanelBase):
-
     def test_alias(self):
-        # More complicated since alias() forces a synchronous call.
-
-        with responses.RequestsMock() as rsps:
-            rsps.add(
-                responses.POST,
-                'https://api.mixpanel.com/track',
-                json={"status": 1, "error": None},
-                status=200,
-            )
-
-            self.mp.alias('ALIAS', 'ORIGINAL ID')
-
-            assert self.consumer.log == []
-            call = rsps.calls[0]
-            assert call.request.method == "POST"
-            assert call.request.url == "https://api.mixpanel.com/track"
-            posted_data = dict(urllib.parse.parse_qsl(six.ensure_str(call.request.body)))
-            assert json.loads(posted_data["data"]) == {"event":"$create_alias","properties":{"alias":"ALIAS","token":"12345","distinct_id":"ORIGINAL ID"}}
+        self.mp.alias('ALIAS', 'ORIGINAL ID')
+
+        assert self.mp._consumer == self.mp._sync_consumer
+        assert self.consumer.log == [
+            ('events', {
+                'event': '$create_alias',
+                'properties': {'distinct_id': 'ORIGINAL ID', 'alias': 'ALIAS', 'token': '12345'}
+            })
+        ]
 
     def test_merge(self):
         self.mp.merge('my_good_api_key', 'd1', 'd2')