diff --git a/src/Illuminate/Notifications/Messages/MailMessage.php b/src/Illuminate/Notifications/Messages/MailMessage.php
index c13f4ef2cf35..2ee8cc2d26e3 100644
--- a/src/Illuminate/Notifications/Messages/MailMessage.php
+++ b/src/Illuminate/Notifications/Messages/MailMessage.php
@@ -3,9 +3,12 @@
 namespace Illuminate\Notifications\Messages;
 
 use Traversable;
+use Illuminate\Mail\Markdown;
+use Illuminate\Container\Container;
 use Illuminate\Contracts\Support\Arrayable;
+use Illuminate\Contracts\Support\Renderable;
 
-class MailMessage extends SimpleMessage
+class MailMessage extends SimpleMessage implements Renderable
 {
     /**
      * The view to be rendered.
@@ -271,4 +274,16 @@ protected function arrayOfAddresses($address)
                $address instanceof Arrayable ||
                $address instanceof Traversable;
     }
+
+    /**
+     * Render the mail object into an HTML string.
+     *
+     * @return string
+     */
+    public function render()
+    {
+        return Container::getInstance()
+            ->make(Markdown::class)
+            ->render($this->markdown, $this->data());
+    }
 }