You can try installing [https://addons.mozilla.org/en-US/firefox/addon/html-notifications/ this extension] . It adds the needed functionality to Firefox. For me it works on Ubuntu but not on Mac OS X. Hope it gets fixed soon because I really like desktop notifications! :) Update: Actually it works just fine on Mac OS X after [http://growl.info/ Growl] is installed!

I installed the add-on but there was no effect. Gmails have come in and there has been no notification. :-(

If you are talking about popup windows, try going to Tools, Options and click on Content at the top, and then add Gmail URL as an exception to blocking popups. Maybe that will help. It is also possible that since Gmail is part of Google, the Google browser (Chrome) is the only internet browser in which the notifications will work. Ask a question about this at Gmail. There is probably a help form there, somewhere. Stan

This is the Add-on you need: https://addons.mozilla.org/en-US/firefox/addon/webmail-notifier/ <br /> -------------------------- <br /> '''You need to update the following.''' The Plugin version(s) shown below was/were submitted with your question and is/are out of date. You should update to avoid known security issues with the version(s) you have installed. Click on "More system info..." to the right of your question to see what was included with your question. *Adobe PDF Plug-In For Firefox and Netscape 8.2.6 *Shockwave Flash 10.2 r152 *Next Generation Java Plug-in 1.6.0_20 for Mozilla browsers #'''''Check your plugin versions''''' on either of the following links': #*http://www.mozilla.com/en-US/plugincheck/ #*https://www-trunk.stage.mozilla.com/en-US/plugincheck/ #*'''Note: plugin check page does not have information on all plugin versions''' #*There are plugin specific testing links available from this page: #**http://kb.mozillazine.org/Testing_plugins #'''Update Adobe Reader (PDF plugin):''' #*From within your existing Adobe Reader ('''<u>if you have it already installed</u>'''): #**Open the Adobe Reader program from your Programs list #**Click Help > Check for Updates #**Follow the prompts for updating #**If this method works for you, skip the "Download complete installer" section below and proceed to "After the installation" below #*Download complete installer ('''if you do <u>NOT</u> have Adobe Reader installed'''): #**SAVE the installer to your hard drive (save to your Desktop so that you can find it after the download). Exit/Close Firefox. Run the installer you just downloaded. #**Use either of the links below: #***https://support.mozilla.com/en-US/kb/Using+the+Adobe+Reader+plugin+with+Firefox ''(click on "Installing and updating Adobe Reader")'' #***''<u>Also see Download link</u>''': http://get.adobe.com/reader/otherversions/ #*After the installation, start Firefox and check your version again. #'''Update the [[Managing the Flash plugin|Flash]] plugin''' to the latest version. #*Download and SAVE to your Desktop so you can find the installer later #*If you do not have the current version, click on the "Player Download Center" link on the "'''Download and information'''" or "'''Download Manual installers'''" below #*After download is complete, exit Firefox #*Click on the installer you just downloaded and install #**Windows 7 and Vista: may need to right-click the installer and choose "Run as Administrator" #*Start Firefox and check your version again or test the installation by going back to the download link below #*'''Download and information''': http://www.adobe.com/software/flash/about/ #**Use Firefox to go to the above site to update the Firefox plugin (will also install plugin for most other browsers; except IE) #**Use IE to go to the above site to update the IE ActiveX #*'''Download Manual installers'''. #**http://kb2.adobe.com/cps/191/tn_19166.html#main_ManualInstaller #**Note separate links for: #***Plugin for Firefox and most other browsers #***ActiveX for IE #'''Update the [[Java]] plugin''' to the latest version. #*Download site: http://www.oracle.com/technetwork/java/javase/downloads/index.html (Java Platform: Download JRE) #**'''''Be sure to <u>un-check the Yahoo Toolbar</u> option during the install if you do not want it installed. #*Also see "Manual Update" in this article to update from the Java Control Panel in Windows Control Panel: http://support.mozilla.com/en-US/kb/Using+the+Java+plugin+with+Firefox#Updates #* Removing old versions (if needed): http://www.java.com/en/download/faq/remove_olderversions.xml #* Remove multiple Java Console extensions (if needed): http://kb.mozillazine.org/Firefox_:_FAQs_:_Install_Java#Multiple_Java_Console_extensions #*Java Test: http://www.java.com/en/download/help/testvm.xml

Still don't get how to receive Google Mail alerts. What URL and where exactly do I have to add to [https://addons.mozilla.org/en-US/firefox/addon/html-notifications/ HTML Notifications] to get it running?

Install the extension [https://addons.mozilla.org/addon/tab-notifier/ tab notifier], the notifications will be exactly like in Chrome (Firefox 4 or newer).