Mailplane is one of my must-have apps, as it brings a whole lot of desktop functionality to GMail such as drag and drop files, the ability to automatically optimize photo attachments, and send screenshot captures as instant attachments. They have just released version 2.0 which boasts some 40 new features, mainly built around support for GMail 2 such as video chat support and so on. Well worth the upgrade. If you’re a GMail user and don’t have this, it’s $24.95 well spent.
It’s Mac only right now but a Windows version is on the way.
Breezeblog 