Since this thread was used in the essentials thread, I'll post this here as well if anyone wants it.
I've only tested with the latest gmail APP thus far and it works very nicely, it'll even stay open in the background unlike previous editions with the midlet 2.0 (not sure if you can run multiple apps/games though.) The direct link to download this for free is;
http://m.google.com/app/v2.0.6/L1/gmail-g.jar