diff --git a/src/Brownie/ESputnik/ESputnik.php b/src/Brownie/ESputnik/ESputnik.php
index 58ff41a..52117b8 100644
--- a/src/Brownie/ESputnik/ESputnik.php
+++ b/src/Brownie/ESputnik/ESputnik.php
@@ -10,6 +10,7 @@
 use Brownie\ESputnik\HTTPClient\HTTPClient;
 use Brownie\ESputnik\Model\Address;
 use Brownie\ESputnik\Model\OrdersInfo;
+use Brownie\ESputnik\Model\RecipientList;
 use Brownie\ESputnik\Model\Version;
 use Brownie\ESputnik\Model\Subscribe;
 use Brownie\ESputnik\Model\Contact;
@@ -391,6 +392,39 @@ public function updateContacts(
         return false;
     }
 
+    /**
+     * SmartSend message.
+     *
+     * @param int                      $message_id              ID message for send
+     * @param RecipientList            $recipientList           List users and params for send
+     *
+     * @return bool
+     */
+    public function sendSmartMessage(
+        int $message_id,
+        RecipientList $recipientList
+    ) {
+        $data = [
+            'recipients' => $recipientList->toArray(),
+        ];
+
+        $response = $this
+            ->getHttpClient()
+            ->request(
+                HTTPClient::HTTP_CODE_200,
+                "message/{$message_id}/smartsend",
+                $data,
+                HTTPClient::HTTP_METHOD_POST
+
+            );
+
+        if (isset($response['response']['results']) && !empty($response['response']['results'])) {
+            return $response['response']['results'];
+        }
+
+        return false;
+    }
+
     /**
      * Creates a contact model for arguments.
      *
diff --git a/src/Brownie/ESputnik/HTTPClient/HTTPClient.php b/src/Brownie/ESputnik/HTTPClient/HTTPClient.php
index 9a271d5..b814787 100644
--- a/src/Brownie/ESputnik/HTTPClient/HTTPClient.php
+++ b/src/Brownie/ESputnik/HTTPClient/HTTPClient.php
@@ -147,7 +147,7 @@ public function request(
          * Checking HTTP Code.
          */
         if ($checkHTTPCode != $httpCode) {
-            throw new InvalidCodeException($httpCode);
+            throw new InvalidCodeException($responseBody);
         }
 
         if ($ignoreEmptyResponse && empty($response)) {
diff --git a/src/Brownie/ESputnik/Model/Contact.php b/src/Brownie/ESputnik/Model/Contact.php
index 2e06029..3c4c021 100644
--- a/src/Brownie/ESputnik/Model/Contact.php
+++ b/src/Brownie/ESputnik/Model/Contact.php
@@ -75,6 +75,10 @@ public function toArray()
     {
         $data = [];
 
+        if ($this->getId()) {
+            $data['id'] = $this->getId();
+        }
+
         if ($this->getFirstName()) {
             $data['firstName'] = $this->getFirstName();
         }
@@ -83,11 +87,13 @@ public function toArray()
             $data['lastName'] = $this->getLastName();
         }
 
-        $data[$this->getChannelList()->getKeyName()] = array_map(
-            function (Channel $channel) {
-                return $channel->toArray();
-            }, $this->getChannelList()->toArray()
-        );
+        if ($this->getChannelList()) {
+            $data[$this->getChannelList()->getKeyName()] = array_map(
+                function (Channel $channel) {
+                    return $channel->toArray();
+                }, $this->getChannelList()->toArray()
+            );
+        }
 
         if ($this->getAddress()) {
             $data['address'] = $this->getAddress()->toArray();
diff --git a/src/Brownie/ESputnik/Model/ContactFieldsUpdate.php b/src/Brownie/ESputnik/Model/ContactFieldsUpdate.php
index f63670b..d7456e2 100644
--- a/src/Brownie/ESputnik/Model/ContactFieldsUpdate.php
+++ b/src/Brownie/ESputnik/Model/ContactFieldsUpdate.php
@@ -41,6 +41,9 @@ class ContactFieldsUpdate extends ArrayList
 
     const POSTCODE = 'postcode';
 
+    const MOBILEPUSH = 'mobilepush';
+
+    const WEBPUSH = 'webpush';
     protected $fields = [
         'fieldNames' => [self::FIRST_NAME, self::LAST_NAME],
         'customFieldIDS' => null,
diff --git a/src/Brownie/ESputnik/Model/MobilePushChannel.php b/src/Brownie/ESputnik/Model/MobilePushChannel.php
new file mode 100644
index 0000000..9d3ac7d
--- /dev/null
+++ b/src/Brownie/ESputnik/Model/MobilePushChannel.php
@@ -0,0 +1,19 @@
+<?php
+/**
+ * @category    Brownie/ESputnik
+ * @author      Brownie <oss.brownie@gmail.com>
+ * @license     http://www.gnu.org/copyleft/lesser.html
+ */
+
+namespace Brownie\ESputnik\Model;
+
+use Brownie\ESputnik\Model\Base\Channel;
+
+/**
+ * Media channel "mobilepush".
+ */
+class MobilePushChannel extends Channel
+{
+
+    protected $type = 'mobilepush';
+}
diff --git a/src/Brownie/ESputnik/Model/Recipient.php b/src/Brownie/ESputnik/Model/Recipient.php
new file mode 100644
index 0000000..04a87c4
--- /dev/null
+++ b/src/Brownie/ESputnik/Model/Recipient.php
@@ -0,0 +1,36 @@
+<?php
+/**
+ * @category    Brownie/ESputnik
+ * @author      Brownie <oss.brownie@gmail.com>
+ * @license     http://www.gnu.org/copyleft/lesser.html
+ */
+
+namespace Brownie\ESputnik\Model;
+
+use Brownie\ESputnik\Model\Base\ArrayList;
+
+/**
+ * Recipient.
+ *
+ * @method string   setEmail($email)                    Set email client.
+ * @method int      setContactId($id)                   Set id.
+ * @method string   setLocator($email)                  Set email client.
+ * @method string   setJsonParam($params)               Set json params.
+ * @method bool     setExternalRequestId($external_id)  Set external id.
+ * @method string   getEmail($email)                    Get email client.
+ * @method int      getContactId()                      Get id.
+ * @method string   getLocator($email)                  Get email client.
+ * @method string   getJsonParam()                      Get json params.
+ * @method string   getExternalRequestId()              Get external id.
+ */
+class Recipient extends ArrayList
+{
+
+    protected $fields = [
+        'email' => null,
+        'contactId' => null,
+        'locator' => null,
+        'jsonParam' => null,
+        'externalRequestId' => null,
+    ];
+}
diff --git a/src/Brownie/ESputnik/Model/RecipientList.php b/src/Brownie/ESputnik/Model/RecipientList.php
new file mode 100644
index 0000000..9a513bc
--- /dev/null
+++ b/src/Brownie/ESputnik/Model/RecipientList.php
@@ -0,0 +1,47 @@
+<?php
+/**
+ * @category    Brownie/ESputnik
+ * @author      Brownie <oss.brownie@gmail.com>
+ * @license     http://www.gnu.org/copyleft/lesser.html
+ */
+
+namespace Brownie\ESputnik\Model;
+
+use Brownie\ESputnik\Exception\ValidateException;
+use Brownie\ESputnik\Model\Base\ArrayList;
+use Brownie\ESputnik\Model\Base\Channel;
+use Brownie\ESputnik\Model\Base\EntityList;
+
+/**
+ * @method Contact      setId($id)                          Set id.
+ * @method Contact      setRecipients($recepients)          Set recepients.
+ * @method int          getId()                             Get id.
+ * @method Recepients   getRecipients()                     Get recepients.
+ */
+class RecipientList extends EntityList
+{
+    protected $keyName = 'recipients';
+
+    /**
+     * Add field to list.
+     * Returns the current object.
+     *
+     * @param Field $field Field contact.
+     *
+     * @return self
+     */
+    public function add(Recipient $field)
+    {
+        parent::append($field);
+        return $this;
+    }
+
+    public function toArray()
+    {
+        return array_map(
+            function (Recipient $field) {
+                return $field->toArray();
+            }, parent::toArray()
+        );
+    }
+}
diff --git a/src/Brownie/ESputnik/Model/WebPushChannel.php b/src/Brownie/ESputnik/Model/WebPushChannel.php
new file mode 100644
index 0000000..63a799b
--- /dev/null
+++ b/src/Brownie/ESputnik/Model/WebPushChannel.php
@@ -0,0 +1,19 @@
+<?php
+/**
+ * @category    Brownie/ESputnik
+ * @author      Brownie <oss.brownie@gmail.com>
+ * @license     http://www.gnu.org/copyleft/lesser.html
+ */
+
+namespace Brownie\ESputnik\Model;
+
+use Brownie\ESputnik\Model\Base\Channel;
+
+/**
+ * Media channel "webpush".
+ */
+class WebPushChannel extends Channel
+{
+
+    protected $type = 'webpush';
+}