Use fileTransport for email in debug mode by default

apps/advanced/common/config/main.php

@@ -6,9 +6,5 @@ return [
 		'cache' => [
 			'class' => 'yii\caching\FileCache',
 		],
-		'mail' => [
-			'class' => 'yii\swiftmailer\Mailer',
-			'viewPath' => '@common/mails',
-		],
 	],
 ];

apps/advanced/environments/dev/common/config/main-local.php

@@ -8,5 +8,10 @@ return [
 			'password' => '',
 			'charset' => 'utf8',
 		],
+		'mail' => [
+			'class' => 'yii\swiftmailer\Mailer',
+			'viewPath' => '@common/mails',
+			'useFileTransport' => true,
+		],
 	],
 ];

apps/advanced/environments/prod/common/config/main-local.php

@@ -8,5 +8,9 @@ return [
 			'password' => '',
 			'charset' => 'utf8',
 		],
+		'mail' => [
+			'class' => 'yii\swiftmailer\Mailer',
+			'viewPath' => '@common/mails',
+		],
 	],
 ];