public async Task EnviarEmailAutomatizado()
        {
            Action <List <Tarefa> > action = PreencherEmail;
            TimeSpan      span             = new TimeSpan(0, 0, 0, 15);
            List <Tarefa> list             = _TarefaService.FindAllPendente();
            ThreadStart   start            = delegate { RunAfterTimespan(action, span, list); };
            Thread        t4 = new Thread(start);

            t4.Start();
            if (_TarefaService.FindAllPendente().Count > 0 || _TarefaService.FindAllPendente() != null)
            {
                await EnviarEmailAutomatizado();
            }
        }