If you’ve got a Java (J2ME) enabled mobile handset (and most of the newer ones are), then I strongly suggest that you check out Roger Skubowius’ brilliant Reqwireless web browser and email programs.
WebViewer and EmailViewer are tiny, full featured, work on a bucket load of devices and do their job superbly. I’ve been testing them out on a state of the art Sony Ericsson s700i and the nice but decidedly low end Nokia 3510i, and they’ve performed brilliantly on both. Priced from $19.99 (with try before you buy versions available on the site).