personB@placeB.com
nameA@location2.com
nameB@location2.com

nameA@location2.com
nameB@location2.com
personB@placeB.com

SELECT-STRING -path path_To_My_File |
FOREACH{
    $a = $_.split"(@)"
    $local = $a[0]
    $domain = $a[1]
}