And here's a bit of info on it: Drag ‘n drop your emails between stages; To Do, Doing and Done until their complete. It makes the hours spent in your inbox a whole lot easier and more organized.

We use a layout called ‘Kanban’ right inside Gmail. You’ll know it from tools such as Trello or Pipedrive Kanban is a way of managing tasks in a lean way, it allows you to visually map your workflow –we’re the first to bring this to Gmail.