diff --git a/src/Message/AbstractDiscordMessage.php b/src/Message/AbstractDiscordMessage.php
new file mode 100644
index 0000000..31a7cd9
--- /dev/null
+++ b/src/Message/AbstractDiscordMessage.php
@@ -0,0 +1,12 @@
+<?php
+
+namespace Woeler\DiscordPhp\Message;
+
+use JsonSerializable;
+
+abstract class AbstractDiscordMessage implements JsonSerializable
+{
+    abstract public function toArray(): array;
+
+    abstract public function jsonSerialize();
+}
diff --git a/src/Message/DiscordEmbedMessage.php b/src/Message/DiscordEmbedMessage.php
index db14547..a7992fb 100644
--- a/src/Message/DiscordEmbedMessage.php
+++ b/src/Message/DiscordEmbedMessage.php
@@ -6,96 +6,96 @@
 
 use DateTimeInterface;
 
-class DiscordEmbedMessage implements DiscordMessageInterface
+class DiscordEmbedMessage extends AbstractDiscordMessage
 {
     /**
      * @var string
      */
-    protected $content;
+    private $content;
 
     /**
      * @var string
      */
-    protected $avatar;
+    private $avatar;
 
     /**
      * @var string
      */
-    protected $username;
+    private $username;
 
     /**
      * @var string
      */
-    protected $title;
+    private $title;
 
     /**
      * @var string
      */
-    protected $description;
+    private $description;
 
     /**
      * @var string
      */
-    protected $url;
+    private $url;
 
     /**
      * @var int
      */
-    protected $color;
+    private $color;
 
     /**
      * @var DateTimeInterface
      */
-    protected $timestamp;
+    private $timestamp;
 
     /**
      * @var string
      */
-    protected $footer_icon;
+    private $footer_icon;
 
     /**
      * @var string
      */
-    protected $footer_text;
+    private $footer_text;
 
     /**
      * @var string
      */
-    protected $thumbnail;
+    private $thumbnail;
 
     /**
      * @var string
      */
-    protected $image;
+    private $image;
 
     /**
      * @var string
      */
-    protected $author_name;
+    private $author_name;
 
     /**
      * @var string
      */
-    protected $author_url;
+    private $author_url;
 
     /**
      * @var string
      */
-    protected $author_icon;
+    private $author_icon;
 
     /**
      * @var array
      */
-    protected $fields = [];
+    private $fields = [];
 
     /**
      * @var bool
      */
-    protected $tts = false;
+    private $tts = false;
 
     public function toArray(): array
     {
-        $data = [
+        return [
             'username'   => $this->username,
             'content'    => $this->content,
             'avatar_url' => $this->avatar,
@@ -124,8 +124,6 @@ public function toArray(): array
                 ],
             ]],
         ];
-
-        return $data;
     }
 
     public function getContent(): ?string
@@ -374,7 +372,7 @@ public function setColorWithHexValue(string $hexValue): self
         return $this;
     }
 
-    public function formatForDiscord(): array
+    public function jsonSerialize()
     {
         return $this->toArray();
     }
diff --git a/src/Message/DiscordMessageInterface.php b/src/Message/DiscordMessageInterface.php
deleted file mode 100644
index ccbdb59..0000000
--- a/src/Message/DiscordMessageInterface.php
+++ /dev/null
@@ -1,14 +0,0 @@
-<?php
-
-declare(strict_types=1);
-
-namespace Woeler\DiscordPhp\Message;
-
-interface DiscordMessageInterface
-{
-    public function formatForDiscord(): array;
-
-    public function toArray(): array;
-
-    public function toJson(): string;
-}
diff --git a/src/Message/DiscordTextMessage.php b/src/Message/DiscordTextMessage.php
index 6ef39bd..4dd9cc1 100644
--- a/src/Message/DiscordTextMessage.php
+++ b/src/Message/DiscordTextMessage.php
@@ -4,27 +4,27 @@
 
 namespace Woeler\DiscordPhp\Message;
 
-class DiscordTextMessage implements DiscordMessageInterface
+class DiscordTextMessage extends AbstractDiscordMessage
 {
     /**
      * @var string
      */
-    protected $content;
+    private $content;
 
     /**
      * @var string
      */
-    protected $avatar;
+    private $avatar;
 
     /**
      * @var string
      */
-    protected $username;
+    private $username;
 
     /**
      * @var bool
      */
-    protected $tts = false;
+    private $tts = false;
 
     public function setContent(string $content): self
     {
@@ -74,11 +74,6 @@ public function setTts(bool $tts): self
         return $this;
     }
 
-    public function formatForDiscord(): array
-    {
-        return $this->toArray();
-    }
-
     public function toArray(): array
     {
         return [
@@ -89,8 +84,8 @@ public function toArray(): array
         ];
     }
 
-    public function toJson(): string
+    public function jsonSerialize()
     {
-        return json_encode($this->toArray());
+        return $this->toArray();
     }
 }
diff --git a/src/Webhook/DiscordWebhook.php b/src/Webhook/DiscordWebhook.php
index 406f69a..036a5db 100644
--- a/src/Webhook/DiscordWebhook.php
+++ b/src/Webhook/DiscordWebhook.php
@@ -5,7 +5,7 @@
 namespace Woeler\DiscordPhp\Webhook;
 
 use Woeler\DiscordPhp\Exception\DiscordInvalidResponseException;
-use Woeler\DiscordPhp\Message\DiscordMessageInterface;
+use Woeler\DiscordPhp\Message\AbstractDiscordMessage;
 
 class DiscordWebhook
 {
@@ -17,7 +17,7 @@ class DiscordWebhook
     /**
      * @var string
      */
-    protected $webhookUrl;
+    private $webhookUrl;
 
     public function __construct(string $webhookUrl)
     {
@@ -27,20 +27,29 @@ public function __construct(string $webhookUrl)
     /**
      * @throws DiscordInvalidResponseException
      */
-    public function send(DiscordMessageInterface $message): int
+    public function send(AbstractDiscordMessage $message): int
     {
-        $ch = curl_init($this->webhookUrl);
-        curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
-        curl_setopt($ch, CURLOPT_POSTFIELDS, $message->toJson());
-        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
-        curl_setopt($ch, CURLOPT_HEADER, true);
-        curl_setopt($ch, CURLOPT_HTTPHEADER, ['content-type: application/json']);
-        curl_exec($ch);
-        $code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
-        curl_close($ch);
-
-        if ($code < 200 || $code >= 400) {
-            throw new DiscordInvalidResponseException('Discord Webhook returned invalid response: '.$code.'.', $code);
+        $sent = false;
+
+        while (!$sent) {
+            $ch = curl_init($this->webhookUrl);
+            curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
+            curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($message));
+            curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+            curl_setopt($ch, CURLOPT_HTTPHEADER, ['content-type: application/json']);
+            $response = curl_exec($ch);
+            $code     = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+            curl_close($ch);
+
+            if (429 === $code) {
+                $response = json_decode($response, false);
+                usleep($response->retry_after * 1000);
+            } else {
+                $sent = true;
+                if ($code < 200 || $code >= 400) {
+                    throw new DiscordInvalidResponseException('Discord Webhook returned invalid response: '.$code.'.', $code);
+                }
+            }
         }
 
         return $code;