That is a very good idea. I do something very similar with Gmail Priority Inbox + Google Calendar already but it's very slightly more work. I have for categorie

That is a very good idea. I do something very similar with Gmail Priority Inbox + Google Calendar already but it's very slightly more work. I have for categories in my Inbox: Starred, Calendar, Todo, Everything else. * Starred are things I'm following until they are done - similar to the complete/incomplete feature they mention. It includes emails like Amazon shipments, work-in-process items, long email threads etc. The label doesn't matter. * Calendar section is automated deadline-driven todos that must be done - paying bills, saying Happy B'days etc. It's similar to their timelines feature but I don't have an easy way to say 'Remind me about this email in June'. Instead, I use the label 'Someday' and once a week or so, go through my Someday emails and star them if necessary. If Priority Inbox allowed me to add 5 sections instead of 4, I would just make Someday one of the section too and be done with it. * Todo section is very similar to Mark for Review and I just add the 'Todo' label to emails when I can't deal with them immediately but plan on doing so in the near future. 'Someday' is for when I want to push it off for a few weeks or months. * Everything else is all other incoming emails. If I archive them, they're gone. If I star them, it means I want to track their progress. If I add 'Todo' / 'Someday' label, it means I intend to work on them soon or someday. Gmail offers almost all the other benefits they mention, including multiple-mailbox, autopilot (filters/rules), and tons of intelligence. Personally, I don't mind sticking to Gmail for now but this type of approach to email validates my current practices and hopefully improves how all of us manage with email.