Statistics in real time
Check the results of your sendings in real time. Go deeper; filter and group using a wide range of options, such as ISP, sendout, date... Don't wait for the next "stats update", check them in real time, whenever you want.
Detailed bounce's reports
Check the SMTP message of your bounce. It will help you understand any possible trouble with your delivery, and it will allow you to act before it's too late.