I have been training quite a few clients on Dragon Naturally Speaking in the last six months. Many of my AT clients are choosing to use Gmail as their primary email system just as the rest of the world is as well. However, I have found that commands that work for Outlook and other email services with Dragon, do not necessarily work with Dragon. However, after perusing YouTube videos and other websites, I put together a list of commands that other users have found to be successful with Dragon.
UPDATE: Gmail only works when you are using internet explorer. It is NOT work using Google Chrome or Firefox.