EOH Mthombo's Employee Email Address Formats

EOH Mthombo uses 4 email formats, with first '.' last (ex. john.smith@eoh.co.za)
being used 90% of the time.
first_initial lastjsmith@eoh.co.za3%
first last_initialjohns@eoh.co.za1%
first '.' lastjohn.smith@eoh.co.za90%
other_templateother_template@eoh.co.za6%