Gmail Notifier is an open-source project that notify you about incoming emails from all your Google Mail accounts and labels. So no matter if you manage one or a dozen Gmail addresses, you can keep them all in check with this fantastic extension.
Here are some of the features of Gmail Notifier:
- No requirement to enter your credentials.
- Multiple account support
- Multiple label support
- Low bandwidth usage by using RSS technology
- Mark as read, report span, trash or archive massages right from Firefox toolbar
Want to learn more? You can get Gmail Notifier from the Firefox Add-ons website.