I've been using Sortd for over a year and a half and couldn't imagine my inbox without it. Sortd even adds a Momentum-like 'What's your focus today?' feature to remind you of what you'd like to accomplish. Just click in the list to add a new task. Want to add a task to a list that's not in an email? No problem. For example, for each email that comes in, you can now add a follow-up reminder, notes, or due date-just like you would have for a task on a to-do list-and color-code the cards on your lists to highlight them. Sortd is the most feature-rich Gmail tool on this list, with a ton of options to customize this new inbox view and enhance your emails. At any time you can switch between the Sortd view and the normal Gmail view in one click. You can rename the subject if you want and even merge multiple emails into one card. You can rename those column lists to whatever works for you, whether that's the classic 'To Do,' 'Doing,' and 'Done' task management lists or something more specific to you, such as 'Project A,' 'Project B,' and 'Personal Tasks.' Drag emails from the inbox to their appropriate lists to turn them into Kanban cards and drag the cards within the lists to prioritize them. Sortd is like a skin or layer on top of Gmail that adds columns to your inbox view. See your emails in Kanban columns with Sortd

Evernote to do list 2016