View file sys/classes/email.class.php

<?php

class Email extends ImapMailbox {

    public function getHtmlText($string) {

        $searchHTML = array("'<script[^>]*?>.*?</script>'si",
            "'<\s*br\s*([^>]*)>'si",
            "'<[\/\!]*?[^<>]*?>'si",
            "'([\r\n])[\s]+'",
            "'&(quot|#34);'i",
            "'&(amp|#38);'i",
            "'&(lt|#60);'i",
            "'&(gt|#62);'i",
            "'&(nbsp|#160);'i",
            "'&(iexcl|#161);'i",
            "'&(cent|#162);'i",
            "'&(pound|#163);'i",
            "'&(copy|#169);'i",
            "'&#(\d+);'e");

        $replaceHTML = array("",
            "\n",
            "",
            "\\1",
            "\"",
            "&",
            "<",
            ">",
            " ",
            chr(161),
            chr(162),
            chr(163),
            chr(169),
            "chr(\\1)");

        return preg_replace($searchHTML, $replaceHTML, $string);
    }

    public function getListMessages() {
        $mail = array();
        $list = $this->searchMailbox('ALL');

        foreach ($list AS $key => $value) {
            $mail[$key] = $this->getMail($value);

            if ($mail[$key]->textPlain) {
                $mail[$key]->message = $mail[$key]->textPlain;
            } elseif ($mail[$key]->textHtml) {
                $mail[$key]->message = $this->getHtmlText($mail[$key]->textHtml);
            } else {
                $mail[$key]->message = '';
            }

            unset($mail[$key]->textPlain, $mail[$key]->textHtml);
        }

        return $mail;
    }

}