require_once( './PHPMailer-master/PHPMailerAutoload.php');
    $mail = new PHPMailer();
    $mail->isSMTP();                                      // Set mailer to use SMTP
    $mail->Host = 'smtp.office365.com';
    $mail->ClearReplyTos();
    $mail->addReplyTo($organizer_email, $organizer);// Specify main and backup server
    $mail->SetFrom('xyx@xyx.com', 'zyx');
    $mail->SMTPAuth = tls;                               // Enable SMTP authentication
    $mail->Username = 'xyz@xyz.com';                   // SMTP username
    $mail->Password = 'xyzzzzz';               // SMTP password
    $mail->SMTPSecure = 'tls';                            // Enable encryption, 'ssl' also accepted
    $mail->Port = 587;                                    //Set the SMTP port number - 587 for authenticated TLS
    $mail->addAddress($organizer_email);  // Add a recipient
    $content = file_get_contents($resume_attach_path);
    $content = chunk_split(base64_encode($content));
    $eol = "rn";
    $tags = explode(',', $to);
    foreach ($tags as $tag) {
        $mail->addCC($tag);
    }
    $mail->WordWrap = 50;
    // Set word wrap to 50 characters
    $headers = "From: xyzn";
    $headers .= 'Content-Type:text/calendar; Content-Disposition: inline; charset=utf-8;rn';
    $headers .= "Content-Type: text/plain;charset="utf-8"rn"; #EDIT: TYPO
    $mail->Subject = $subject;
    $mail->Body = $desc;
    $mail->AltBody = $text; // in your case once more the $text string
    $mail->Ical = $text; // ical format, in your case $text string
    $mail->isHTML(true); // Set email format to HTML
    $mail->msgHTML(file_get_contents('contents.doc'), $resume_attach_path);
    //Replace the plain text body with one created manually
    $mail->AltBody = 'This is a plain-text message body';
    //Attach an resume document or pdf file
    $mail->addAttachment($resume_attach_path);
    if ($mail->send()) {
       return true;
    }else{
        return false;
    }