Gmail Manager, more control of your Gmail accounts

Gmail Manager is a Firefox extension that allows you to manage multiple gmail accounts and receive new mail notifications. Displays account details including unread messages, saved drafts, spam messages, labels with new mail, space used, and new mail snippets. Gmail Manager is available in about 19 languages and its main features are :
* Manage multiple Gmail accounts
* Receive new mail notifications
* Tooltip with account details including new mail snippets
* One-click access for loading Gmail in a tab/window
* Mailto: links detection
* Quick mail compose menu for Gmail accounts
* Customizable icon placement in the statusbar or toolbar area