How do I change the from header when sending a mail

As you can see it is from Apache, How can I make it from "Customer Support".
This is my email code:

if(isset($_POST['submit']))
{

$check = mysqli_query($conn, "select * from users where email = '$email' ");
$row = mysqli_fetch_array($check);
$from= "Customer Support";
$message ="Please click here to create a new password http://home;
$subject = 'Change password';
$body = "E-Mail: $email\n Message:\n $message";

if($row)
{
	
    $res = mail ($email, $subject, $body,$from);
    header("Location: index.php/?a=1");
   //echo "Please check your email";
}

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