diff --git a/mail.md b/mail.md
index 06dc85f94c..4bd1cf7362 100644
--- a/mail.md
+++ b/mail.md
@@ -1462,6 +1462,10 @@ class LogMessage
 Laravel includes a variety of mail transports; however, you may wish to write your own transports to deliver email via other services that Laravel does not support out of the box. To get started, define a class that extends the `Symfony\Component\Mailer\Transport\AbstractTransport` class. Then, implement the `doSend` and `__toString` methods on your transport:
 
 ```php
+<?php
+
+namespace App\Mail;
+
 use MailchimpTransactional\ApiClient;
 use Symfony\Component\Mailer\SentMessage;
 use Symfony\Component\Mailer\Transport\AbstractTransport;