diff --git a/intercom/templates/intercom/_intercom_js.html b/intercom/templates/intercom/_intercom_js.html
index 2567590..2bec399 100644
--- a/intercom/templates/intercom/_intercom_js.html
+++ b/intercom/templates/intercom/_intercom_js.html
@@ -1,9 +1,10 @@
 {% if email %}
-<script>
+<script id="IntercomSettingsScriptTag">
   var intercomSettings = {
     app_id: '{{ app_id }}',
-    email: '{{ email }}',{% if user_hash %}
-    user_hash: '{{ user_hash }}',{% endif %}
+    email: '{{ email }}',
+    user_id: '{{ user.id }}',
+    {% if user_hash %}user_hash: '{{ user_hash }}',{% endif %}
     custom_data: {{ custom_data|safe }},
     created_at: {{ created_at }},
     widget: {
@@ -14,19 +15,6 @@
       }
     },
   };
-  (function() {
-    function async_load() {
-      var s = document.createElement('script');
-      s.type = 'text/javascript'; s.async = true;
-      s.src = 'https://api.intercom.io/api/js/library.js';
-      var x = document.getElementsByTagName('script')[0];
-      x.parentNode.insertBefore(s, x);
-    }
-    if (window.attachEvent) {
-      window.attachEvent('onload', async_load);
-    } else {
-      window.addEventListener('load', async_load, false);
-    };
-  })();
 </script>
+<script>(function(){var w=window;var d=document;var i=function(){i.c(arguments)};i.q=[];i.c=function(args){i.q.push(args)};w.Intercom=i;function l(){var s=d.createElement('script');s.type='text/javascript';s.async=true;s.src='https://api.intercom.io/api/js/library.js';var x=d.getElementsByTagName('script')[0];x.parentNode.insertBefore(s,x);}if(w.attachEvent){w.attachEvent('onload',l);}else{w.addEventListener('load',l,false);}})();</script>
 {% endif %}
diff --git a/intercom/templatetags/intercom_tags.py b/intercom/templatetags/intercom_tags.py
index 51b7eed..780be48 100644
--- a/intercom/templatetags/intercom_tags.py
+++ b/intercom/templatetags/intercom_tags.py
@@ -11,23 +11,23 @@
 
 @register.inclusion_tag("intercom/_intercom_js.html")
 def intercom_js(user):
-    if hasattr(settings, "INTERCOM_APP_ID") and user.is_authenticated():
-        if hasattr(settings, "INTERCOM_USER_HASH_KEY"):
-            user_hash = sha_constructor(settings.INTERCOM_USER_HASH_KEY + user.email).hexdigest()
-        else:
-            user_hash = None
-        
-        custom_data = {}
-        for app in getattr(settings, "INTERCOM_APPS", []):
-            m = __import__(app + ".intercom", globals(), locals(), ["intercom"])
-            custom_data.update(m.custom_data(user))
-        
-        return {
-            "app_id": settings.INTERCOM_APP_ID,
-            "email": user.email,
-            "user_hash": user_hash,
-            "created_at": int(time.mktime(user.date_joined.timetuple())),
-            "custom_data": simplejson.dumps(custom_data, ensure_ascii=False)
-        }
-    else:
+    if not (hasattr(settings, "INTERCOM_APP_ID") and user.is_authenticated()):
         return {}
+
+    if hasattr(settings, "INTERCOM_USER_HASH_KEY"):
+        user_hash = sha_constructor(settings.INTERCOM_USER_HASH_KEY + user.id).hexdigest()
+    else:
+        user_hash = None
+
+    custom_data = {}
+    for app in getattr(settings, "INTERCOM_APPS", []):
+        m = __import__(app + ".intercom", globals(), locals(), ["intercom"])
+        custom_data.update(m.custom_data(user))
+
+    return {
+        "app_id": settings.INTERCOM_APP_ID,
+        "email": user.email,
+        "user_hash": user_hash,
+        "created_at": int(time.mktime(user.date_joined.timetuple())),
+        "custom_data": simplejson.dumps(custom_data, ensure_ascii=False)
+    }