The most unique feature of this extension for me is that it allows me as an admin, to add / edit contacts in my Sugar CRM and send emails from Gmail accounts without any hassle. I really like how easy it was for me (and my team) to learn this tool. It's a wonderful product! There isn't too much you dislike about this software. Sometimes when we are editing contact information or other info within our account there can be some lag time - but nothing too major. If your looking for integration between your two favorite platforms- Google Apps and SugarCRM- then look no further than Yathit. We love using email campaigns through our sales reps within google drive while also having all of their customer data on our sugarcrm system.