All of must have plugins to improve marketing moves in your store! Use Real Time Marketing - notify your customers about abandoned cart, unpaid orders, bought products. Make reports and charts from your orders, registrations. Analyze statistics. Use SQL queries to make any report. Using these plugins profits grow in the eyes.
Integrate your shop to sell the most popular portals with minimal effort and so precious time. Must have plugin to make many actions much easier than always. Sell your products on eBay and Amazon, allow your customers to register with G+, Twitter, Amazon accounts.