```ruby
namespace :spree_chimpy do
  namespace :orders do
    desc 'sync all orders with mail chimp'
    task sync: :environment do
      scope = Spree::Order.complete

      puts "Exporting #{scope.count} orders"

      scope.find_in_batches do |batch|
        print '.'
        batch.each do |order|
          begin
            order.notify_mail_chimp
          rescue => exception
            puts exception
          end
        end
      end

      puts nil, 'done'
    end
  end
end
```

Add rake task for segmenting users
user
```ruby
namespace :spree_chimpy do
  namespace :orders do
    desc 'sync all orders with mail chimp'
    task sync: :environment do
      scope = Spree::Order.complete

      puts "Exporting #{scope.count} orders"

      scope.find_in_batches do |batch|
        print '.'
        batch.each do |order|
          begin
            order.notify_mail_chimp
          rescue => exception
            puts exception
          end
        end
      end

      puts nil, 'done'
    end
  end
  
  namespace :users do
    desc 'segment all subscribed users'
    task segment: :environment do
      if Spree::Chimpy.segment_exists?
        emails = Spree.user_class.where(subscribed: true).pluck(:email)
        puts "Segmenting all subscribed users"
        response = Spree::Chimpy.list.segment(emails)
        response["errors"].each do |error|
          puts "Error #{error["code"]} with email: #{error["email"]} \n msg: #{error["msg"]}"
        end
        puts "done"
      end
    end
  end
end
```
assistant