like the name suggests, it’s for checking gmail account for new email
you might know that there’s already gtray for windows: http://torrez.us/archives/2004/05/23/000272.html
and there’s also gtray for unix: http://fraggle.alkali.org/projects/gtray/
furthermore, there’s GMailCheck for gdesklet and I believe there’s something for KDE users too!
I use XFCE CVS myself, but gtray for unix requires ruby-gnome binding… that requires me to install 10 other programs just for a simple mail checker!!! >:(
It’s very barebone right now since I have exams in a week, I can’t spend too much time on it.
you can check out my program here.