public function send($to, $subject, $from, $html = '', $attachments = array(), $returnPath = '')
    {
        if ($returnPath)
        {
            $returnPath = <<<EOF

Return-Path: {$returnPath}
EOF;
        }

        //Create a random boundary
        $boundary = sha1(rand() . time() . 'Arron');

        //lets get started, the headers come first. Pay attention to the blank lines, they are important.
        //Following the headers is our first part of the email. The plain text version.
        $rawEmail = <<<EOE

Subject: {$subject}
MIME-Version: 1.0
Content-type: multipart/alternative; boundary="{$boundary}"{$returnPath}

EOE;
        // if we have some html set, lets create a new part and add it
        if ($html)
        {
            $rawEmail .= <<<EOE

--{$boundary}
Content-Type: text/html; charset=iso-8859-1

{$html}

EOE;
        }

        // loop through our attachments
        foreach ($attachments as $attachment)
        {
            // ensure we can access the file
            if (file_exists($attachment))
            {
                // get all the meta information we need
                $contentType        = $this->mimeType($attachment);
                $size               = filesize($attachment);
                $attachmentName     = basename($attachment);
                //base64 encode our attachment content
                $attachmentContent  = base64_encode(file_get_contents($attachment));

                $rawEmail .= <<<EOE
--{$boundary}
Content-Type: {$contentType}; name="{$attachmentName}"
Content-Description: "{$attachmentName}"
Content-Disposition: attachment; filename="{$attachmentName}"; size={$size};
Content-Transfer-Encoding: base64

{$attachmentContent}

EOE;
            }
        }

        //finish off our email with the boundary
        $rawEmail .= <<<EOE

--{$boundary}--

EOE;

        error_log($rawEmail, 3, 'emailraw.log');

        // set up the arguments to pass to the client. You can set 'Source' in
        // here, but I encountered errors. So found setting it in the headers worked
        // best.
        $args = array(
            'Source'        => $from,
            'Destinations'  => array($to),
            'RawMessage'    => array(
                'Data' => $rawEmail
            )
        );

        try
        {
            $response = $this->getClient()->sendRawEmail($args);
            return $response->get('MessageId');
        }
        catch (SesException $mrEx) // @todo it will be MessageRejectedException but I don't find as a class
        {
            $this->log('Unable to send email: Rejected. ' . $mrEx->getMessage());
        }
        catch (\Exception $ex)
        {
            $this->log('Unable to send email: Unknown. ' . $ex->getMessage());
        }

    }