public function sendSeparateEmails(array $toAddresses, $subject, $body)
    {
        $failures = 0;
        $ccList = $this->getCcAddresses();

        foreach ($toAddresses as $address) {
            if (!$this->sendEmail($address, $ccList, $subject, $body)) {
                $failures++;
            }
        }
        return $failures;
    }