The latest Inbox by Gmail update brings some big improvements to the way search within the app works, allowing you to find the information you need even faster. Often times, the information we need is buried within a chain of emails, and finding it can be difficult, but Google is looking to change that. Now, when searching for a membership number or tracking information for a package, you'll be presented quick answer cards that show you the applicable information, not just the chain of emails.
Under these quick answers, you'll also notice a "Top results" section, which shows you the emails on the topic, sorted by date. Google doesn't anticipate you'll need to use this much, as it believes the quick answers will provide the information you are looking to find. The new features are available now in the latest Inbox by Gmail from Google Play.
Source: Gmail Blog