Simple Mail is a cool new Firefox extension which embeds a full function email client inside the browser. Although I can’t see this replacing Thunderbird on my machine, it could be very useful for folks who travel a lot. You could install Firefox and this extension on a USB key and use it as your ‘on the road’ mail and browser. Or even use it as part of a full Mojopac environment install on a USB key. Neato! [via Lifehacker]
Configure one or more accounts in Preferences, set account refresh time and get notified of new mail. When new mail arrives, Simple Mail shows new messages count in status bar. You can click Simple Mail icon to open received messages in a separate browser tab. Also Simple Mail has a toolbar button, which you can put on a toolbar to more easily access SM.