Gmail Manager is the original Gmail notifier for multiple accounts. Allows you to receive new mail notifications along with viewing account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets.
Here are the features of Gmail Manager:
- Manage multiple Gmail accounts
- Receive new mail notifications
- Support for Gmail hosted accounts
- Ability to import/export account preferences
- Tooltip with account details and new mail snippets
- One-click access for loading your Gmail account
- Mailto: links detection
- Quick mail compose for Gmail accounts
- Customizable icon placement in the toolbar/statusbar
Want to learn more? You can check out Gmail Manager at the Firefox Add-ons website.