1. MailTime use a stand-alone intelligent email classifier to figure out which email is your important one. However, this classifier is very weak at the beginning and it will become better if you reply/compose your email in the MailTime.
2. If you use email not too often and your mailbox is basically not a newsletter list, the important page will be empty. But don't worry, as you communicate more, you will make more friends and get the important list filled!