diff --git a/src/Mailer.php b/src/Mailer.php
index 3ec6cd9..74149d7 100644
--- a/src/Mailer.php
+++ b/src/Mailer.php
@@ -81,6 +81,12 @@ class Mailer extends CApplicationComponent
      */
     public $defaultHeaders = [];
 
+    /**
+     * @var \Psr\Log\LoggerInterface|null PSR logger to be applied to the mail transport.
+     * @see https://github.com/yii1tech/psr-log
+     */
+    public $logger;
+
     /**
      * @var \Symfony\Component\Mailer\Mailer Symfony mailer instance.
      */
@@ -182,9 +188,9 @@ public function getTransport(): TransportInterface
             }
 
             if ($this->dsn === 'array://') {
-                $this->_transport = new ArrayTransport();
+                $this->_transport = new ArrayTransport(null, $this->logger);
             } else {
-                $this->_transport = Transport::fromDsn($this->dsn);
+                $this->_transport = Transport::fromDsn($this->dsn, null, null, $this->logger);
             }
 
             return $this->_transport;