I used godaddy hosting for my website. I tried to send the contact form fill to my personal gmail and it worked (send as a spam). If I change it to my website email, it said successfully send but there's none in the inbox. (the code below is suggested by godaddy)

I used zoho mail for my website email and I also tried using their configuration (their host and tsl security), but it didn't work. There's always "https://github.com/PHPMailer/PHPMailer/wiki/troubleshooting" popup when I tried to send the contact form filling source

$mail = new PHPMailer();
    //If you don't receive the email, enable and configure these parameters below: 
    $mail->IsSMTP();
    $mail->Mailer='smtp';
    $mail->SMTPAuth = false;
    $mail->SMTPAutoTLS = false; 
    //$mail->SMTPSecure = 'ssl';                            // Enable TLS encryption, `ssl` also accepted
    $mail->Port = 25;                                    // TCP port to connect to  587 or 465
    $mail->Host = 'localhost';                  // Specify main and backup SMTP servers, example: smtp1.example.com;smtp2.example.com
    $mail->Username = 'support@domain.com';                    // SMTP username
    $mail->Password = 'xxxx';                    // SMTP password
    $mail->SMTPOptions = array('ssl' => array('verify_peer' => false,'verify_peer_name' => false,'allow_self_signed' => true));
    
    $mail->CharSet = 'UTF-8';
    $mail->From = $email;
    $mail->FromName = $name;
    if(strpos($to, ',') !== false){
        $email_addresses = explode(',', $to);
        foreach($email_addresses as $email_address) {
            $mail->AddAddress(trim($email_address));
        }
    }
    else {$mail->AddAddress($to);}
    $mail->AddReplyTo($email, $name);
    $mail->Subject = $subject; 
    $mail->isHTML(true);