If you have a few email accounts and would like to be able to access them on the go, then I can recommend GMX — the rich Web 2.0 interface is so similar to using Windows (Outlook) and you can set it up easily to collect emails from a number of POP accounts, as well as Yahoo, Hotmail and GoogleMail.
Its a great example of what people are calling Rich Internet Applications (RIA) which aim to eventually replace desktop applications, and also shows what is possible using “Web 2.0″ technology such as Ajax.



