Как поставить задержку на мгновенный поиск AngularJS?

Я прочитал комментарий в файле email.php:

// most documentation of sendmail using the "-f" flag lacks a space after it, however
        // we've encountered servers that seem to require it to be in place.
        return mail($this->_recipients, $this->_subject, $this->_finalbody, $this->_header_str, '-f '.$this->clean_email($this->_headers['Return-Path']));

"- f" flag - эта проблема !!!