i.Scribe is a small and fast email client with an intergrated contact database and calendar.
It supports all the major internet mail protocols and uses international standards where possible. i.Scribe doesn't require installing or uninstalling and can be used from a removable drive without reconfiguration. It comes with a bayesian spam filter and translations to many different languages. Updates are published regularly to respond to problems and to add features. Because i.Scribe runs on Windows and Linux you can take your mail with you when you change operating system. And don't worry about viruses, i.Scribe protects you from the usual security holes in other email clients with it's own virus safe HTML control and executable attachment protection.