cannot send email to multiple recepients using phpmailer - php

Question

I'm trying to send an email to multiple recipients using phpmailer and getting the emails list from my table in the database, however, whenever I make a request only one recipient, the first one on the list gets the email. *I know this might be marked as duplicate but I couldn't find a similar example using mysql
<?php
if (isset($_POST['submit'])) {
if (empty($errors)) {
$thisType = mysql_prep($_POST["partner_type"]);
$content = $_POST["content"];
$header = $_POST["header"];
$query = "SELECT * FROM partners_list WHERE partner_type = '$thisType' ";
$result = mysqli_query($connection, $query);
$count = mysqli_num_rows($result);
while($row = mysqli_fetch_assoc($result)){
require_once("phpMailer/class.phpmailer.php");
require_once("phpMailer/class.smtp.php");
require_once("phpMailer/language/phpmailer.lang-uk.php");
$to_name = "Order";
$subject = $header;
$message = $content;
$message = wordwrap($message,70);
$from_name = "thisCompany";
$from = "noreply#thicCompany.com";
$mail = new PHPMailer();
$mail->AddAddress($row['email'], "Test Message"); // add each DB entry to list of recipients
$mail->FromName = $from_name;
$mail->From = $from;
$mail->Subject = $subject;
$mail->Body = $message;
$result = $mail->Send();
// Success
$_SESSION["message"] = "e-mail successfully sent.";
redirect_to("successpage.php");
}
}
} else {
}
?>