if Dir.exist?("#{MU.mainDataDir}/users/#{user}") and
       File.readable?("#{MU.mainDataDir}/users/#{user}/email") and
       File.size?("#{MU.mainDataDir}/users/#{user}/email")
      return File.read("#{MU.mainDataDir}/users/#{user}/email").chomp
    elsif @userlist.has_key?(user)