Mail Header

        $headers = "MIME-Version: 1.0" . "\r\n";
        $headers .= "Content-type:text/html;charset=UTF-8" . "\r\n";

        // More headers
        $headers .= 'From: <tesztmail@gmail.com>' . "\r\n";
        $headers .= 'Cc: tesztmail@gmail.com' . "\r\n";

        $headers .= "Reply-To: tesztmail@gmail.com\r\n";
        $headers .= "Return-Path: tesztmail@gmail.com\r\n";
        $headers .= "BCC: tesztmail@gmail.com\r\n";