Displays the number of unread messages in your Gmail and Google Apps inbox. Preview mail, read, delete, archive and mark as spam!
Google Mail Checker Plus Classic - the second fastest way to inbox zero!
This extension is actually version 188.8.131.52 of Google Mail Checker Plus, and will not be maintained or updated in any way. It is provided as-is which means that if you have a problem with it, don't expect any help.