Add reply-to on config for Mailer

src/Illuminate/Mail/MailServiceProvider.php

@@ -48,6 +48,12 @@ public function register()
                 $mailer->alwaysTo($to['address'], $to['name']);
             }
 
+            $replyTo = $app['config']['mail.reply-to'];
+
+            if (is_array($replyTo) && isset($replyTo['address'])) {
+                $mailer->alwaysReplyTo($replyTo['address'], $replyTo['name']);
+            }
+
             return $mailer;
         });
     }

src/Illuminate/Mail/Mailer.php

@@ -52,6 +52,13 @@ class Mailer implements MailerContract, MailQueueContract
      */
     protected $to;
 
+    /**
+     * The global reply-to address and name.
+     *
+     * @var array
+     */
+    protected $replyTo;
+
     /**
      * The IoC container instance.
      *
@@ -112,6 +119,18 @@ public function alwaysTo($address, $name = null)
         $this->to = compact('address', 'name');
     }
 
+    /**
+     * Set the global reply-to address and name.
+     *
+     * @param  string  $address
+     * @param  string|null  $name
+     * @return void
+     */
+    public function alwaysReplyTo($address, $name = null)
+    {
+        $this->replyTo = compact('address', 'name');
+    }
+
     /**
      * Begin the process of mailing a mailable class instance.
      *
@@ -417,6 +436,13 @@ protected function createMessage()
             $message->from($this->from['address'], $this->from['name']);
         }
 
+        // If a global reply-to address has been specified we will set it on every message
+        // instances so the developer does not have to repeat themselves every time
+        // they create a new message. We will just go ahead and push the address.
+        if (! empty($this->replyTo['address'])) {
+            $message->replyTo($this->replyTo['address'], $this->replyTo['name']);
+        }
+
         return $message;
     }