Method send

/**
 * Render and send the mail
 *
 * @return  boolean  True on success
 *
 * @since   4.0.0
 * @throws  \Exception
 * @throws  MailDisabledException
 * @throws  phpmailerException
 */
public function send()
{
    $config = ComponentHelper::getParams('com_mails');
    $mail = self::getTemplate($this->template_id, $this->language);
    // If the Mail Template was not found in the db, we cannot send an email.
    if ($mail === null) {
        return false;
    }
    /** @var Registry $params */
    $params = $mail->params;
    $app = Factory::getApplication();
    if ($config->get('alternative_mailconfig')) {
        if ($this->mailer->Mailer === 'smtp' || $params->get('mailer') === 'smtp') {
            $smtpauth = $params->get('smtpauth', $app->get('smtpauth')) == 0 ? null : 1;
            $smtpuser = $params->get('smtpuser', $app->get('smtpuser'));
            $smtppass = $params->get('smtppass', $app->get('smtppass'));
            $smtphost = $params->get('smtphost', $app->get('smtphost'));
            $smtpsecure = $params->get('smtpsecure', $app->get('smtpsecure'));
            $smtpport = $params->get('smtpport', $app->get('smtpport'));
            $this->mailer->useSmtp($smtpauth, $smtphost, $smtpuser, $smtppass, $smtpsecure, $smtpport);
        }
        if ($params->get('mailer') === 'sendmail') {
            $this->mailer->isSendmail();
        }
        $mailfrom = $params->get('mailfrom', $app->get('mailfrom'));
        $fromname = $params->get('fromname', $app->get('fromname'));
        if (MailHelper::isEmailAddress($mailfrom)) {
            $this->mailer->setFrom(MailHelper::cleanLine($mailfrom), MailHelper::cleanLine($fromname), false);
        }
    }
    $app->triggerEvent('onMailBeforeRendering', array($this->template_id, &$this));
    $subject = $this->replaceTags(Text::_($mail->subject), $this->data);
    $this->mailer->setSubject($subject);
    $mailStyle = $config->get('mail_style', 'plaintext');
    $plainBody = $this->replaceTags(Text::_($mail->body), $this->data);
    $htmlBody = $this->replaceTags(Text::_($mail->htmlbody), $this->data);
    if ($mailStyle === 'plaintext' || $mailStyle === 'both') {
        // If the Plain template is empty try to convert the HTML template to a Plain text
        if (!$plainBody) {
            $plainBody = strip_tags(str_replace(['<br>', '<br />', '<br/>'], "\n", $htmlBody));
        }
        $this->mailer->setBody($plainBody);
        // Set alt body, use $mailer->Body directly because it was filtered by $mailer->setBody()
        if ($mailStyle === 'both') {
            $this->mailer->AltBody = $this->mailer->Body;
        }
    }
    if ($mailStyle === 'html' || $mailStyle === 'both') {
        $this->mailer->isHtml(true);
        // If HTML body is empty try to convert the Plain template to html
        if (!$htmlBody) {
            $htmlBody = nl2br($plainBody, false);
        }
        $htmlBody = MailHelper::convertRelativeToAbsoluteUrls($htmlBody);
        $this->mailer->setBody($htmlBody);
    }
    if ($config->get('copy_mails') && $params->get('copyto')) {
        $this->mailer->addBcc($params->get('copyto'));
    }
    foreach ($this->recipients as $recipient) {
        switch ($recipient->type) {
            case 'cc':
                $this->mailer->addCc($recipient->mail, $recipient->name);
                break;
            case 'bcc':
                $this->mailer->addBcc($recipient->mail, $recipient->name);
                break;
            case 'to':
            default:
                $this->mailer->addAddress($recipient->mail, $recipient->name);
        }
    }
    if ($this->replyto) {
        $this->mailer->addReplyTo($this->replyto->mail, $this->replyto->name);
    }
    if (trim($config->get('attachment_folder', ''))) {
        $folderPath = rtrim(Path::check(JPATH_ROOT . '/' . $config->get('attachment_folder')), \DIRECTORY_SEPARATOR);
        if ($folderPath && $folderPath !== Path::clean(JPATH_ROOT) && is_dir($folderPath)) {
            foreach ((array) json_decode($mail->attachments) as $attachment) {
                $filePath = Path::check($folderPath . '/' . $attachment->file);
                if (is_file($filePath)) {
                    $this->mailer->addAttachment($filePath, $this->getAttachmentName($filePath, $attachment->name));
                }
            }
        }
    }
    foreach ($this->attachments as $attachment) {
        if (is_file($attachment->file)) {
            $this->mailer->addAttachment($attachment->file, $this->getAttachmentName($attachment->file, $attachment->name));
        } else {
            $this->mailer->addStringAttachment($attachment->file, $attachment->name);
        }
    }
    return $this->mailer->Send();
}