I would strongly recommend reading this article: https://blog.codinghorror.com/discussions-flat-or-threaded/ https://blog.codinghorror.com/discussions-flat-or-

I would strongly recommend reading this article: https://blog.codinghorror.com/discussions-flat-or-threaded/ https://blog.codinghorror.com/discussions-flat-or-threaded/ Flat discussions make much more sense, especially for emails. Gmail and most email clients are focusing on flat discussion threads, which are much easier to follow.