Best Gmail Checker Rated 5 out of 5 stars

I switched over from Webmail Notifier and immediately noticed a difference. Checker took slightly longer to notify me of new mail upon starting my browser, but I can jump to any new message without having to first open my mailbox. It's also not dependent on dumping a ton of cookies onto my computer, which is one of the reasons I switched in the first place. This is one addon I'll be using for a long while.

This review is for a previous version of the add-on (2.6.1.1-signed).