The service is now up but the browser on the tablet says (paraphrased),

"we recommend the following browsers.....
Safari 3 or later
Firefox 2 or later

Press OK and it takes you back to the same screen. One cannot access webmail at all.

I suspect the problem is with the browser's support of AJAX and other modern standards. After all Yahoo! Mail (new version) has issues too.

I can't help but feel a little defensive presently at my thread. Many on this site seem ready to assume all tablet users are linux root users but we're not. Some of us are plain old joe bloggs from the streets who have bought a tablet to access their favourite websites. webmail.mac.com was mine, now it's replacement is unavailable and I have to find a desktop with a browser that is fine with the standards of modern pages.

Again, I ask, how does one get in touch with the browser team to ask them if they are coming out with updates more often?