GrexIt is your shared email inbox, built on top of your Google Apps email. You can add email discussions from your inbox to GrexIt easily, where your colleagues can access them. You and your team can collaborate inside GrexIt by using Labels, which are just like labels in Gmail, but shared. GrexIt lends itself exceptionally well to creation of knowledge bases from email, and to quick and easy email driven collaboration.
GrexIt joined Morpheus’ Batch 4 in May 2010
Watch their Demo Day 2, 2011 pitch here