When Google introduced its Priority Inbox last year, it was with the promise that the system could help us manage our important email more efficiently. Now Google has published a paper on how the Priority Inbox learns what's important, and on how much time that may end up saving users.

The research comes from Douglas Aberdeen, Ondrej Pacovsky and Andrew Slater from Google's Swiss office, and the data comes from Googlers' usage of Priority Inbox - so take the results for what you will. But according to the findings, Priority Inbox users spent 6% less time reading mail overall, and 13% less time reading unimportant mail.

You should be using gmail, and you should turn on priority inbox. They're really good.