/** 保存邮件通道 */
  public static void saveMail() {
    ErrorInfo error = new ErrorInfo();

    BackstageSet backstageSet = new BackstageSet();

    backstageSet.mailAccount = params.get("mailAccount");
    backstageSet.mailPassword = params.get("mailPassword");
    backstageSet.emailWebsite = params.get("emailWebsite");
    backstageSet.POP3Server = params.get("POP3Server");
    backstageSet.STMPServer = params.get("STMPServer");
    String isChargesChannels = params.get("isChargesChannels");
    String value = isChargesChannels == null ? "0" : "1";
    backstageSet.isChargesChannels = value;

    backstageSet.MAILChannels(error);

    if (error.code < 0) {
      flash.error(error.msg);
    }

    flash.success(error.msg);

    DealDetail.supervisorEvent(
        Supervisor.currSupervisor().id, SupervisorEvent.MAIL_CHANNEL, "修改短信通道设置", error);

    if (error.code < 0) {
      JPA.setRollbackOnly();

      return;
    }

    BackstageSet.setCurrentBackstageSet(backstageSet);

    mailPassage();
  }