There is a new version of Gmail for Symbian & RIM phones or phones supporting J2ME. Version 2.0 is available at http://m.google.com/mail
It looks good and they have added extra support for multiple accounts, so one is able to switch to other email addresses. Extremely useful if you have more than one mail address.
There is also offline support which is great if you are on a train writing an email and about to send, when suddenly you are going through a tunnel or in an area with no reception. The email gets saved in your Outbox, and when you have signal again, the email is sent automatically.
Did you know Gmail has it’s own blog. Check it out, it’s very good.