There are several great things that Gmail, the official Google online mail application, can handle. Here are a few of the best Gmail features that you should use. Some of these features can be activated from gmail labs tab in settings page .
Labels :- You can create different labels for all of your emails. These include labels that help to state that you have certain emails for personal needs, receipts from online transactions, travel parts and other materials.
Spam Reporting :- You can report individual emails as spam mails. This can work in the event that an email ends up appearing in your inbox and that email is spam. Google will keep a record of your report and potentially collect several reports to help create spam notifications. This will help to keep certain emails from being sent to other people over a period of time.