I met the guys from MixMax at the Inbox Love conference in October. They have a really cool Chrome extension that enhances the Gmail email compose editor with some interactive features.
The MixMax extension adds buttons to the Gmail compose window
Gmail Rolls Back Font-Size Changes on iOS App.
Gmail seems to have reverted the changes they made three days ago when they started bumping font sizes by over 50% in their iOS apps on the
Gmail iOS App Increases Email Font Size and What You Can Do About It
The Gmail app on IOS is increasing the font size in some emails. For the most part, this change has improved the experience on Gmail as it has made previously small fonts legible. However in other emails it has made the experience