Disappointing transition from Gmail Checker Rated 1 out of 5 stars
Not a fan of this add-on. It's clunky, the preview box is slow to navigate; it doesn't manage log-ins.
Gmail Checker was a far, far better add-on IMO. Quick and snappy, auto-login to multiple accounts, you could preview 10 emails from 8 different accounts in the space of 5 seconds. (Handy when you don't have time to sift through them all). Real shame that the developer discontinued it... I would pay to have it back and working.