Rated 4 out of 5 stars
It really is nice, but when I updated to 0.8 I started having problems when I open the left pane for the calendar. The last couple of days on the calendar are hidden behind the folders' pane for my mail. And so I have uninstalled it, after trying several re-installs.
Hopefully, if this is a problem for many, it will be corrected in 0.9! My operating system is Vista.