The code shows that the Magic Inbox will organize e-mails
Important to show up in the mailbox
Recently, Gmail is also equipped with some strange features, such as Multiple inboxes - view multiple windows inbox, Autocomplete at the same time and recently allows users to transfer e-mail and contacts from other webmail.
Magic Inbox prioritizes e-mails from frequently contacted addresses
Meanwhile, rival Yahoo is also planning to integrate social services into Yahoo Inbox; and Microsoft has turned Hotmail into a Social Inbox social site.
Currently, the Magic Inbox feature has not yet appeared in the Gmail Labs section. Hopefully, Google will show it soon for users to have a chance to experiment.