Attachments working intermittently - php

Question

I am having issues with my phpMailer script. I can email from the script, I can even send attachments from the script. However, it only works SOMETIMES and not at other times. I tried changing servers and I have the same issues so I am assuming that it is a coding issue.
when It does not work, the emails still go thorough but it is stripped from any attachments.
The attachments are definitely making it onto the server in the same location and then this script is sent an array of attachments which it then adds onto the message.
In one instance the same code and same files will send and not send! Very confusing! Usually some will send for awhile and then some will not for awhile.
Here is the code:
<?php
include('connection.php');
require_once('PHPMailer/PHPMailerAutoload.php');
class Mailer extends PHPMailer {
public function copyToFolder($folderPath) {
$message = $this->MIMEHeader . $this->MIMEBody;
$path = "INBOX" . (isset($folderPath) && !is_null($folderPath) ? ".".$folderPath : ""); // Location to save the email
$imapStream = imap_open("{mail.server.com:143/novalidate-cert}" . $path , $this->Username, $this->Password) or die(mysql_error());
imap_append($imapStream, "{mail.server.com:143/novalidate-cert}" . $path, $message)or die(mysql_error());
}
imap_close($imapStream);
}
}
$from = $_POST['from'];
$username = $from;
$grabPassword = mysql_query("SELECT * FROM `email_pw_db` WHERE `emailaddress` = '$from'");
$fetchPassword = mysql_fetch_assoc($grabPassword);
$password = $fetchPassword['password'];
$company = $_POST['to'];
$toemail = $_POST['toemail'];
$from = $username;
$namefrom = $_POST['from'];
$subject = $_POST['subject'];
$cc = trim($_POST['cc']);
$bcc = trim($_POST['bcc']);
$message = $_POST['body'];;
$attachments = $_POST['attachments'];
$mail = new Mailer();
$body = $message;
/*Create a new email*/
$mail = new Mailer();
$mail->isSMTP();
$mail->Host = 'mail.server.com';
$mail->Username = $username;
$mail->Password = $password;
$mail->From = $from;
$mail->AddReplyTo($from,$namefrom);
$mail->SMTPKeepAlive = true; // SMTP connection will not close after each email sent, reduces SMTP overhead
$mail->SetFrom($from, $namefrom);
$mail->AddReplyTo($from,$namefrom);
$address = $toemail;
$mail->AddAddress($address, $company);
$mail->Subject = $subject;
$mail->AltBody = "To view the message, please use an HTML compatible email viewer!";
$mail->MsgHTML($body);
if($cc!=''){
$mail->addCC($cc);
}
//CC EMAILS//
$breakOutCC = explode(',', $cc);
$countBreakOut = count($breakOutCC);
$i = 0;
while($i <$countBreakOut)
{
$mail->addCC($breakOutCC[$i]);
$i++;
}
$breakOutBCC = explode(',', $bcc);
$countBreakOutBCC = count($breakOutBCC);
$i = 0;
while($i <$countBreakOutBCC)
{
$mail->addBCC($breakOutBCC[$i]);
$i++;
}
$breakoutAttachments = explode(',', $attachments);
$countAttachments = count($breakoutAttachments);
$i = 0;
while($i <$countAttachments)
{
$mail->AddAttachment("attachments/email_attachments/".$breakoutAttachments[$i]);
$i++;
}
if(!$mail->Send()) {
echo "Mailer Error: " . $mail->ErrorInfo;
$errorMessage = $mail->ErrorInfo;
header( 'Location: email-software.php?dialog=Whoops Something Happened- '.$errorMessage ) ;
} else {
//$mail->copyToFolder(); //save email
$mail->copyToFolder("Sent"); // Will save into Sent folder
$attachments = $_POST['attachments'];
$breakoutAttachments = explode(',', $attachments);
$countAttachments = count($breakoutAttachments);
$i = 0;
while($i <$countAttachments)
{
unlink("attachments/email_attachments/".$breakoutAttachments[$i]);
$i++;
}
header( 'Location: email-software.php?dialog=email sent' ) ;
}
?>