make it possible to directly mail html strings

src/Illuminate/Mail/Mailer.php

@@ -7,6 +7,7 @@
 use Swift_Message;
 use Illuminate\Support\Arr;
 use InvalidArgumentException;
+use Illuminate\Support\HtmlString;
 use Illuminate\Contracts\View\Factory;
 use Illuminate\Contracts\Events\Dispatcher;
 use Illuminate\Contracts\Container\Container;
@@ -427,7 +428,9 @@ protected function createMessage()
      */
     protected function getView($view, $data)
     {
-        return $this->views->make($view, $data)->render();
+        return $view instanceof HtmlString
+                        ? $view->toHtml()
+                        : $this->views->make($view, $data)->render();
     }
 
     /**

tests/Mail/MailMailerTest.php

@@ -1,6 +1,7 @@
 <?php
 
 use Mockery as m;
+use Illuminate\Support\HtmlString;
 
 class MailMailerTest extends PHPUnit_Framework_TestCase
 {
@@ -29,6 +30,27 @@ public function testMailerSendSendsMessageWithProperViewContent()
         unset($_SERVER['__mailer.test']);
     }
 
+    public function testMailerSendSendsMessageWithProperViewContentUsingHtmlStrings()
+    {
+        unset($_SERVER['__mailer.test']);
+        $mailer = $this->getMockBuilder('Illuminate\Mail\Mailer')->setMethods(['createMessage'])->setConstructorArgs($this->getMocks())->getMock();
+        $message = m::mock('Swift_Mime_Message');
+        $mailer->expects($this->once())->method('createMessage')->will($this->returnValue($message));
+        $view = m::mock('StdClass');
+        $mailer->getViewFactory()->shouldReceive('make')->never();
+        $view->shouldReceive('render')->never();
+        $message->shouldReceive('setBody')->once()->with('rendered.view', 'text/html');
+        $message->shouldReceive('addPart')->once()->with('rendered.text', 'text/plain');
+        $message->shouldReceive('setFrom')->never();
+        $this->setSwiftMailer($mailer);
+        $message->shouldReceive('getSwiftMessage')->once()->andReturn($message);
+        $mailer->getSwiftMailer()->shouldReceive('send')->once()->with($message, []);
+        $mailer->send(['html' => new HtmlString('rendered.view'), 'text' => new HtmlString('rendered.text')], ['data'], function ($m) {
+            $_SERVER['__mailer.test'] = $m;
+        });
+        unset($_SERVER['__mailer.test']);
+    }
+
     public function testMailerSendSendsMessageWithProperPlainViewContent()
     {
         unset($_SERVER['__mailer.test']);