You can also configure your inbox to “Pre-Sort” incoming mail into Primary, Social, Promotions, Updates, or Forums so that you can keep a handle on the flood of mail coming in. This allows you to keep everything in its place.
Beyond this, if you still need tips on keeping your email under check, you can also use Labels. Rather than assigning email into folders, Gmail allows you to apply labels to your incoming mail so it can easily be found later. But not just one label. Whereas with other email clients, a message can only be filed away in one folder, you can apply up to 5000 labels to one email message. So you no longer have to worry if you have an email that applies to multiple topics. Watch this video to learn more.