Actually needed Rated 4 out of 5 stars

I actually have need for something like this addon, since I'm using the "multiple accounts" feature of Gmail. Gmail for some reason allows Labs enhancements only in the account you login first, so I can't get the "Unread count on favicon" labs feature for my other account.

@Jupast, thanks for directing me to userscripts, I believe this is the one you're talking about: https://userscripts.org/scripts/show/24430 Will try it now.

Rated 4 out of 5 stars

Well to the review saying it's 'Not needed anymore' i would say that the icon used here is better than Gmails version, plus it doesn't leave a '0' on the icon all the time.

Since this add-on isn't working at the moment, there's always the option of the Greasemonkey script version, which is exactly the same.

Not needed anymore Rated 4 out of 5 stars

Gmail added this function in the labs of Gmail.

Just go in Parameters->Labs and you will find it.

Rated 4 out of 5 stars

Doesn't work anymore :(

Rated 4 out of 5 stars

Is it possible that with gmail's new look is messing up the addon?

This review is for a previous version of the add-on (3.11.2).  This user has a previous review of this add-on.

I'll look into it. I actually switched to Chrome quite a while ago, so I don't actively use this addon, but if it stops just add a review here and I'll be happy to fix it.

Update: It appears to me that the update to Gmail did not break the addon, and it works fine for me. What version of Firefox / Aurora are you using?

Reduntant Rated 3 out of 5 stars

Am I correct that this is Peter Wooley's script Gmail Favicon Alerts 3 (http://userscripts.org/scripts/show/24430) compiled as an addon? If it is, I think this addon is reduntant. I would much rather install a userscript than an addon.
**EDIT** Changed rating to three stars because of the developer's informative response. He explained the benefit of using an addon over a script. I'm still sticking with the script though, I have no need of another addon.

This review is for a previous version of the add-on (3.11.2). 

Although the code used in this addon is based off the userscript, it doesn't require the use of any Greasemonkey features. I originally made this when Firefox 4 was in beta, and Greasemonkey could not be used. Because it's an addon, not only can it be used in pretty much any version of Firefox, it can also take advantage of numerous optimizations that userscripts cannot. Such as cache generation once per firefox session, rather than each page load.

Rated 3 out of 5 stars

This is a great addon if you use gmail as a pinned app tab. However, it does not work correctly with priority inbox. It will only update when an 'important' email is received. Will donate $5 if this is fixed. Perfect otherwise.

This review is for a previous version of the add-on (3.11.2). 

App Tab must have Rated 5 out of 5 stars

This addon is much more accurate than Google favicon. Instead of showing 100+ you will see 132. I use Chat and if I didn't have this, I'd never see that I have a new message.

This review is for a previous version of the add-on (3.11.2). 

With one more change..... Rated 4 out of 5 stars

I tried this over the Gmail labs version because I wanted to see if the displayed count number is bigger and more easily read than the Gmail labs version. Alas, it's not so. Can you make the number at least as large as the envelope favicon? Or can the number size be optional? Could it be as large as the tab would allow? I doubt anyone really needs to see the envelope favicon to know that its the Gmail tab. I'd like to be able to read it at a glance without reaching for my reading glasses....Thanks,John

This review is for a previous version of the add-on (3.11.2).  This user has a previous review of this add-on.

Rated 1 out of 5 stars

how about make addon who checks mail without opening gmail in tab?-.-

This review is for a previous version of the add-on (3.11.1). 

unfair?

I think this review is a little unfair. You gave it 1 star, because it doesn't do something that isn't advertised.. I'd even be fine with you rating it 4 stars and giving me that suggestion, but it's the "Gmail Favicon Notifier" for a reason.

Now it's officially part of Gmail Labs Rated 2 out of 5 stars

This same functionality is available by enabling the "Unread message icon" lab within Gmail settings.

This review is for a previous version of the add-on (3.10.2). 

Rated 1 out of 5 stars

Doesn't work in FF4.

This review is for a previous version of the add-on (3.10.2). 

Fixed

Google released a new version of Gmail that broke the addon, but I have reprogrammed it and it should work quite flawlessly now.

Not refreshing FF4 Rated 5 out of 5 stars

Hi
I'm using it with Firefox 4.0 on ubuntu 10.10 and it's not working properly.
It works fine with one email, since it turns blue and once the email is read is back in grey, but when there's more than one it shows the quantity and once read it doesn't update by itself. I have to refresh the page.

This review is for a previous version of the add-on (3.10.2). 

Fixed

Google released a new version of Gmail that broke the addon, but I have reprogrammed it and it should work quite flawlessly now.

Awesome for what I need it for Rated 4 out of 5 stars

All I really need this for is to show me when I have new chat messages when Gmail is pinned as an app tab. For this, it works great. As other people said, the unread e-mail counts are not necessarily accurate, which is unfortunate. It would also be cool if this extension could tie in with Growl for desktop notifications.

This review is for a previous version of the add-on (3.10.2). 

Fixed

I'm glad to know that people find the chat notifications useful :) I've fixed the problem with message counts. As for Growl notifications, are you on Mac or Windows? I'm thinking about adding them, since it would be something I'd find useful as well.

Doesn't work in FF4 Rated 1 out of 5 stars

Icon displays initial unread count, but does not update over time, defeating the entire purpose if I have to click the tab to find out how many items are still unread.

This review is for a previous version of the add-on (3.10.2). 

Fixed

This has been fixed in the new version of the addon.

Nice Add-On, Just need a fix Rated 4 out of 5 stars

This is a really handy add-on. Especially with the new pin-tab option in Firefox 4.
The only thing is that it's not working yet for me. I still have to refresh the page in order to update the flavicon...
When this is fixed, this add-on really improves the user experience of Firefox! Great job!

This review is for a previous version of the add-on (3.10.2). 

Fixed

This has finally been fixed. Google updated Gmail and it broke the addon, but I have reprogrammed it to be very flexible, so it shouldn't be breaking anytime soon in the future.

Icon still not working Rated 3 out of 5 stars

Downloaded the Add-On today (March 23, version 3.10.2) and the page still needs to be refreshed to update the icon. Looks like it could be a good icon if this would be fixed. I would recommend it.

This review is for a previous version of the add-on (3.10.2). 

Fixed

Google changed Gmail on March 18th, and I just got an email regarding the addon not working. I've fixed it, and it should work for quite a long time, since the code is more flexible.

Rated 5 out of 5 stars

Thank you! This is the only add-on I could find that works with FF4.

This review is for a previous version of the add-on (3.10.1). 

Rated 2 out of 5 stars

not usefull coz i must refresh to get the icon away

This review is for a previous version of the add-on (3.10). 

Fixed

This has been fixed in version 3.11.2

Turn it off? Rated 3 out of 5 stars

It's great at turning the notifier on with the number of e-mails, but after I've read the e-mail, the number stays up there. Apart from me physically reloading the apptab, is there a way to reset it? Also, is there any way to get a sound effect going, that would make it perfect for me.

This review is for a previous version of the add-on (3.10). 

Fixed

This has been fixed in version 3.10.1, it is just being reviewed before it is released to the public. Sorry. As far as the sound, I'll look into it. I'm always open for feature suggestions I receive from users.