if group and emails.any?
  emails.each do |email|
    if user = Spree::User.find_by(email: email)
      if user.user_group.present?
        if user.user_group != group
          puts "User #{user.email} is already in group #{user.user_group.name}"
        end
      else
        user.update_column(user_group_id: group.id)
      end
    else
      user = Spree::User.new(email: email)
      user.password = password
      user.skip_confirmation! if Spree::Auth::Config[:confirmable]
      user.save!
    end
  end
end