ERT's Employee Email Address Formats

ERT uses 4 email formats, with first '.' last (ex. john.smith@ert.com)
being used 55% of the time.
first_initial lastjsmith@ert.com37%
first_initial '.' lastj.smith@ert.com1%
first '.' lastjohn.smith@ert.com55%
other_templateother_template@ert.com7%