Eccube\Application::initMailer PHP Метод

    public function initMailer()
    {
        // メール送信時の文字エンコード指定(デフォルトはUTF-8)
        if (isset($this['config']['mail']['charset_iso_2022_jp']) && is_bool($this['config']['mail']['charset_iso_2022_jp'])) {
            if ($this['config']['mail']['charset_iso_2022_jp'] === true) {
                \Swift::init(function () {
                    \Swift_DependencyContainer::getInstance()->register('mime.qpheaderencoder')->asAliasOf('mime.base64headerencoder');
                    \Swift_Preferences::getInstance()->setCharset('iso-2022-jp');
                });
            }
        }
        $this->register(new \Silex\Provider\SwiftmailerServiceProvider());
        $this['swiftmailer.options'] = $this['config']['mail'];
        if (isset($this['config']['mail']['spool']) && is_bool($this['config']['mail']['spool'])) {
            $this['swiftmailer.use_spool'] = $this['config']['mail']['spool'];
        }
        // デフォルトはsmtpを使用
        $transport = $this['config']['mail']['transport'];
        if ($transport == 'sendmail') {
            $this['swiftmailer.transport'] = \Swift_SendmailTransport::newInstance();
        } elseif ($transport == 'mail') {
            $this['swiftmailer.transport'] = \Swift_MailTransport::newInstance();
        }
    }