Gmail extension for Chrome

Gmail Checker is a simple Chrome extension that alerts you to incoming e-mails.

Gmail Checker installs itself as a small mail icon next to the URL or address bar of your browser. If you have unread emails. it alerts you instantly and shows the number of unread messages as a number on the icon. If you click on the mail icon, the browser opens the Gmail inbox. However Gmail Checker isn’t much more advanced than that – there are no preferences and there’s no support for multiple accounts.

Gmail Checker is a simple add-on although there are very few advanced options.