Gmail has a new Auto save feature. It is a boon. I use to loose mail contents that I had typed because of combination of enabling keyboard shortcuts and auto refresh of gmail.
Most of the time when I am mid-way typing the mail, a refresh would take the focus away from the TextField and Gmail web app responds to the keyboard enteries as shortcuts discarding the mail contents that I had typed.
The auto save feature saves a draft every few minustes and I will not be loosing contents badly as I was.