Код: Выделить всё
'mailer' => [
'class' => 'yii\swiftmailer\Mailer',
'messageConfig' => [
'charset' => 'UTF-8',
],
'transport' => [
'class' => 'Swift_SmtpTransport',
'host' => 'smtp.yandex.ru',
'username' => 'lk@test.com',
'password' => 'pass',
'port' => '587',
'encryption' => 'TLS',
],
],