diff --git a/Libs/ModelSerializers/AbstractSerializer.php b/Libs/ModelSerializers/AbstractSerializer.php
index 571d0275..821cdf40 100644
--- a/Libs/ModelSerializers/AbstractSerializer.php
+++ b/Libs/ModelSerializers/AbstractSerializer.php
@@ -184,6 +184,11 @@ abstract class AbstractSerializer implements IModelSerializer
                             $value = JsonUtils::toJsonFloat($value);
                         }
                             break;
+                        case 'json_obfuscated_email':
+                        {
+                            $value = JsonUtils::toObfuscatedEmail($value);
+                        }
+                        break;
                     }
                 }
                 $new_values[$mapping[0]] = $value;
@@ -210,7 +215,6 @@ abstract class AbstractSerializer implements IModelSerializer
             if(strlen($res) > 0) $res .= ',';
             $res .= explode('.', strtolower(trim($filtered_expand_elem)))[1];
         }
-
         return $res;
     }
 }
\ No newline at end of file
diff --git a/Libs/Utils/JsonUtils.php b/Libs/Utils/JsonUtils.php
index c21978a4..5bb40a27 100644
--- a/Libs/Utils/JsonUtils.php
+++ b/Libs/Utils/JsonUtils.php
@@ -32,6 +32,18 @@ abstract class JsonUtils
         return $value;
     }
 
+    /**
+     * @param $value
+     * @return string
+     */
+    public static function toObfuscatedEmail($value){
+        $em   = explode("@", $value);
+        $name = implode(array_slice($em, 0, count($em) - 1), '@');
+        $len  = floor(mb_strlen($name) / 2);
+        $obfuscated_email = mb_substr($name, 0, $len) . str_repeat('*', $len) . "@" . end($em);
+        return $obfuscated_email;
+    }
+
     /**
      * @param string $value
      * @return bool
diff --git a/app/Http/Controllers/JsonController.php b/app/Http/Controllers/JsonController.php
index 5250d3a0..9778a989 100644
--- a/app/Http/Controllers/JsonController.php
+++ b/app/Http/Controllers/JsonController.php
@@ -36,25 +36,10 @@ abstract class JsonController extends Controller
         return Response::json(array('message' => 'server error'), 500);
     }
 
-    /**
-     * @param $mixed
-     * @return array|bool|null|string|string[]
-     */
-    static function utf8ize($mixed) {
-        if (is_array($mixed)) {
-            foreach ($mixed as $key => $value) {
-                $mixed[$key] = self::utf8ize($value);
-            }
-        } elseif (is_string($mixed)) {
-            return mb_convert_encoding($mixed, "UTF-8", "UTF-8");
-        }
-        return $mixed;
-    }
-
 
     protected function created($data = 'ok')
     {
-        $res = Response::json(self::utf8ize($data), 201);
+        $res = Response::json($data, 201);
         //jsonp
         if (Input::has('callback')) {
             $res->setCallback(Input::get('callback'));
@@ -65,7 +50,7 @@ abstract class JsonController extends Controller
 
     protected function deleted($data = 'ok')
     {
-        $res = Response::json(self::utf8ize($data), 204);
+        $res = Response::json($data, 204);
         //jsonp
         if (Input::has('callback')) {
             $res->setCallback(Input::get('callback'));
@@ -76,7 +61,7 @@ abstract class JsonController extends Controller
 
     protected function updated($data = 'ok', $has_content = true)
     {
-        $res = Response::json(self::utf8ize($data), $has_content ? 201 : 204);
+        $res = Response::json($data, $has_content ? 201 : 204);
         //jsonp
         if (Input::has('callback')) {
             $res->setCallback(Input::get('callback'));
@@ -91,7 +76,7 @@ abstract class JsonController extends Controller
      */
     protected function ok($data = 'ok')
     {
-        $res = Response::json(self::utf8ize($data), 200);
+        $res = Response::json($data, 200);
         //jsonp
         if (Input::has('callback')) {
             $res->setCallback(Input::get('callback'));
diff --git a/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php b/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php
index f0eba9f1..4a6daa33 100644
--- a/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php
+++ b/app/ModelSerializers/Summit/Speakers/PresentationSpeakerSerializer.php
@@ -33,26 +33,13 @@ class PresentationSpeakerSerializer extends SilverStripeSerializer
         'FundedTravel'          => 'funded_travel:json_boolean',
         'WillingToTravel'       => 'willing_to_travel:json_boolean',
         'WillingToPresentVideo' => 'willing_to_present_video:json_boolean',
+        'Email'                 => 'email:json_obfuscated_email',
     ];
 
     protected static $allowed_relations = [
         'member',
     ];
 
-    /**
-     * @param PresentationSpeaker $speaker
-     * @return null|string|string[]
-     */
-    protected function getSpeakerEmail(PresentationSpeaker $speaker){
-        $email = $speaker->getEmail();
-        $em   = explode("@", $email);
-        $name = implode(array_slice($em, 0, count($em) - 1), '@');
-        $len  = floor(strlen($name) / 2);
-
-        $obfuscated_email = substr($name, 0, $len) . str_repeat('*', $len) . "@" . end($em);
-        return $obfuscated_email;
-    }
-
     /**
      * @param null $expand
      * @param array $fields
@@ -68,7 +55,6 @@ class PresentationSpeakerSerializer extends SilverStripeSerializer
         if(!$speaker instanceof PresentationSpeaker) return [];
 
         $values                            = parent::serialize($expand, $fields, $relations, $params);
-        $values['email']                   = $this->getSpeakerEmail($speaker);
         $summit_id                         = isset($params['summit_id'])? intval($params['summit_id']):null;
         $published                         = isset($params['published'])? intval($params['published']):true;
         if(!is_null($summit_id)) {