I use this Greasemonkey script to do this. It works in Chrome and Firefox: http://userscripts.org/scripts/show/24430 http://userscripts.org/scripts/show/24430

I use this Greasemonkey script to do this. It works in Chrome and Firefox: http://userscripts.org/scripts/show/24430 http://userscripts.org/scripts/show/24430 It does the unread count thing, but it also toggles between it and the chat icon if you have unread chat messages. It's a must if you pin gmail tabs.