Reaching "Inbox zero" is not an easy task. Especially when there are those emails that might require future action, or those that hang in a nebulous state of still being useful despite the conversation having ended. It's also not very easy to parse out exactly what you need to get done after poring over a page of emails. To address both of these issues (and a few others), Google has been working on a project called Bigtop.

Rumor: A Project Codenamed Bigtop Will Be Google's New Task-Oriented Email System was written by the awesome team at Android Police.