For the first time in over 5 years I have achieved true Inbox Zero meaning that I do not have a single message sitting in either my personal or work email inbox. I decided to make a concerted effort to achieve this earlier in the week and after archive over 1500 messages I am done and it feels great!
Removing old inbox messages start getting really easy once you get a couple of months back in your list since very little of that is current any more. It's just that if you never take the time to go through the whole list you never get around to removing this from your inbox and if you have something that is actually important you will have a real hard finding it. In the emails that were over 1 year old I found less than 10 emails in my case that contained information that was still relevant and important. That said I would have a real problem finding that information since it was just sitting around the 1000+ un-filed messages in my inbox.
Now it is just interesting to see how long I can hang on to this.