Sort columns Rated 4 out of 5 stars

Its an amazing tool. I have been searching for while for such one tool to organize my mails, and here is the solution.

It would be of another advantage, if we have the multi-column sorting, i.e. I should be able to sort my columns both by 'Priority' and 'Due Date'. In this way, I would be able to see important and due right for today mails at the top.

This review is for a previous version of the add-on (2.0).