Add reply to support (#1)

* add replyTo support to SendGridMessage

* set replyTo on Mail

Author: semihcosu

src/SendGridMessage.php

@@ -4,6 +4,7 @@
 
 use SendGrid\Mail\From;
 use SendGrid\Mail\Mail;
+use SendGrid\Mail\ReplyTo;
 use SendGrid\Mail\To;
 
 class SendGridMessage
@@ -22,6 +23,11 @@ class SendGridMessage
      */
     public $tos = [];
 
+    /**
+     * The reply to address for the message.
+     */
+    public $replyTo;
+
     /**
      * The SendGrid Template ID for the message.
      *
@@ -76,6 +82,13 @@ public function to($email, $name = null, $data = [])
         return $this;
     }
 
+    public function replyTo($email, $name = null)
+    {
+        $this->replyTo = new ReplyTo($email, $name);
+
+        return $this;
+    }
+
     public function payload($payload)
     {
         $this->payload = $payload;
@@ -93,6 +106,8 @@ public function build(): Mail
             $this->tos
         );
 
+        $email->setReplyTo($this->replyTo);
+
         $email->setTemplateId($this->templateId);
 
         foreach ($this->payload as $key => $value) {

tests/SendGridChannelTest.php

@@ -39,7 +39,8 @@ public function testEmailIsSentViaSendGrid()
         $this->assertEquals($message->tos[0]->getName(), 'Example User1');
         $this->assertEquals($message->payload['bar'], 'foo');
         $this->assertEquals($message->payload['baz'], 'foo2');
-
+        $this->assertEquals($message->replyTo->getEmail(), 'replyto@example.com');
+        $this->assertEquals($message->replyTo->getName(), 'Reply To');
         // TODO: Verify that the Mail instance passed contains all the info from above
         $sendgrid->shouldReceive('send')->once()->andReturn($response);
 
@@ -59,6 +60,7 @@ public function toSendGrid($notifiable)
         return (new SendGridMessage('sendgrid-template-id'))
             ->from('test@example.com', 'Example User')
             ->to('test+test1@example.com', 'Example User1')
+            ->replyTo('replyto@example.com', 'Reply To')
             ->payload([
                 'bar' => 'foo',
                 'baz' => 'foo2',