Google offers the possibility to extend gmail and to create products and services over gmail using the gmail contextual gadgets.
Some examples of existend contextual gadget are the you tube video preview and the feature “Also include” in the CC/BCC (activable via gmail->settings->labs).
I’m going to develop a POC for organizing email and attachments like itsme project. I don’t know if this is already possible in gmail but I’ll try.
In the next future gmail may get more relevance as platform if Google will continue to develop more sophisticated extensions.
Updates on this project will follow in the next weeks!