Set and forget the Gmail plugin to automatically snooze emails till a certain time of day or week. This helps you batch process emails.

For example, you can snooze (hide) all sales-related emails from your Inbox till say 9 AM in the morning. And at 9 AM, they will popup back into your Inbox. This is like the GMail's snooze feature except you automate it once rather than manually snoozing every email that is cluttering your Inbox.