I tried Everbot on both Gmail and the Google calendar. It never did work right on the Calendar. When I submitted a problem through their tool, I got one reply saying they would look into it, but never heard back from them again. I have since uninstalled the Everbot extension and don't plan on using it again. It's a great idea, and I think they were on the right track, but they need to up their game on support, and customer service if they want to see any real fruit from this tree. I also think they may need to do a bit more testing before they release a product. That's just my .02 worth.