trying out a gmail notifier in Ubuntu 10.10. It’s called GmailWatcher and I got my information from here. To install, fire up the Terminal and use these two lines:
sudo add-apt-repository ppa:loneowais/ppa
sudo apt-get update && sudo apt-get install gmailwatcher
After it installs, left-click on themail notification icon and then click on the GmailWatcher option which is in the drop-down list. That should open a window which has a “settings” button you can press to add a new account. Enter your info and – viola! – you should be good to go! Under that dialogue there’s a tab for “Preferences” which gives you an option to have GmailWatcher start up when you login on your computer – excellent choice, I’d say…
I’ll update if I have any problems, but it seems to be running pretty smoothly so far!

