iNotes and Offline Gmail

I have been using Gmail from the very early beta stage, The biggest incentive was the big volume it offered and the superb spam filtering performance! And now it even comes withe offline function!!! After using the offline Gmail for past couple weeks , I am so amazed by its performance! It is almost doing 100% Lotus iNotes can do except the contacts, calendar not support offline function, but thats good enough for what I need so far.