Excellent Add-on! Rated 5 out of 5 stars
I've been trying several gmail add-ons, but this is the only one that successfully checked multiple accounts, and gave a no-muss, no-fuss pop-up that allowed access to ALL accounts. Well done.
(Note to other users: You must use Google's multiple log-in feature for this add-on to check multiple accounts. You can find info about this here...
It's not that complicated with a small amount of reading, and then this add-on will work wonderfully. :-) )