Hi guys,
Even though I set an email in with setFrom method, when I receive that the from mail is that of the smtp host account.
return \Yii::$app->mailer->compose(['html' => 'trip-request/sendRequest-html', 'text' => 'trip-request/sendRequest-text'], ['trip_request' => $this, 'trip_request_message' => $trip_request_message])
->setFrom('email@value.it')
->setTo($to_email)
->setSubject($subject)
->send();