yii2 how to prevent swiftmailer from sending email to spam folder

Question

How to prevent swiftmailer from sending email to the spam folder I'm using it like this:

        Yii::$app->mailer->compose()
          ->setFrom($sender_email)
          ->setTo($reciver)
          ->setSubject($subject)
          ->setTextBody($body)
          ->setHtmlBody($hml)
          ->send();

Answer 1

Use some header

Reference

$message = Yii::$app->mailer->compose(...);
$message->getSwiftMessage()->getHeaders()->addTextHeader('name', 'value');

and also see this