//contact_us.php

<form class="form" action="mail.php" method="post">
    <input type="text" class="wp-form-control wpcf7-text" placeholder="Nama" name="name">
    <input type="text" class="wp-form-control wpcf7-text" placeholder="Nomor Telepon" name="tlp">
    <input type="mail" class="wp-form-control wpcf7-email" placeholder="Alamat Email" name="email">
    <textarea class="wp-form-control wpcf7-textarea" cols="30" rows="10" placeholder="Apa yang ingin anda sampaikan kepada kami atau keluhan anda" name="message"></textarea>
    <button class="wpcf7-submit button--itzel" type="submit">
    <span>Kirim</span></a>
    <i class="button__icon fa fa-envelope">Kirim</i>
    </button>
</form>

//mail.php

<?php
include "classes/class.phpmailer.php";

$name=$_POST['name'];
$tlp=$_POST['tlp'];
$email=$_POST['email'];
$message=$_POST['message'];

$mail = new PHPMailer;
$mail->IsSMTP();
$mail->SMTPSecure = 'ssl';
$mail->Host = "WEBSITE SAYA"; //host masing2 provider email
$mail->SMTPDebug = 2;
$mail->Port = 465;
$mail->SMTPAuth = true;
$mail->Username = "EMAIL SAYA";
$mail->Password = "PASSWORD SAYA";
$mail->SetFrom("$email","$name"); //kalo disini langsung di isi ("blabla@bla.com","bla"); bisa
$mail->Subject = "contact us";
$mail->AddAddress("info@identalstudio.com","contact us");
$mail->MsgHTML("$message");
if($mail->Send()) echo "Message has been sent";
else echo "Failed to sending message";
?>