A couple of years back I started using a tool called ClearContext, which prioritised the 3-400 daily emails I receive based on their priority. Some special algorithmic magic looked at how often I read, how quickly I responded to automatically work out what was a priority based on my behaviour.
Having taken the plunge in January and moving wholesale from Outlook to Gmail, I’ve become hooked. Once or twice, I’ve even got close to reaching Inbox Zero. Close, but no cigar, at least not for long. Still, it’s an improvement.