Rated 5 out of 5 stars

Win 10 64 bit. FF56 and 57.0.1 (both computers/browsers same behavior)
It was working recently. Now, all of a sudden, will not report new Yahoo email. It seems to log in, and I can click in the XN window to get to all my Yahoo email accts, but will not report new emails.

This review is for a previous version of the add-on (4.1.7). 

Rated 4 out of 5 stars

4.1.5
Using both FF 56 and 57 on different computers.
My X-notifier works again!! Yay. It was definitely the "Tracking Protection" issue. Wish I would have known before.
Although, after clicking to open my email account, I still have to click x-notifier again to update the email count (log in to email twice via x-notifier). I use 5 different yahoo accts. AWESOME ADD-ON!

This review is for a previous version of the add-on (4.1.5). 

Rated 1 out of 5 stars

4.1.3 was working "ok" with Yahoo. I would have to click on pull down XN menu and click on email account a second time after login to that account to clear number of new emails. But at least it checked for new emails on several different yahoo accounts.
4.1.4 does not check any accounts and clicking on any XN pull down listing only takes you to the "red" highlighted account regardless of which one selected.

I re-installed 4.1.3 but it does not work now either.

--- I'm back to my old manual logging in to each account via the yahoo login page now. ---

This review is for a previous version of the add-on (4.1.4). 

Rated 5 out of 5 stars

I stopped using 3.5.23 after yahoo started using 2 page login a month or so ago. I have 5 yahoo accounts that I check all the time. This week, I thought I would see if x-notifier had been updated for FF and so I tried the most recent version and imported my backup .xn file. Presto! It checked all my yahoo email accounts. I was shocked and pleasantly surprised. I love it. Now I just have to figure out if there is some secret setting that lets the icon know that I have opened and read my email because it keeps the number of phantom unread emails up even though I have closed out of the yahoo website.

This review is for a previous version of the add-on (4.1.3). 

Rated 5 out of 5 stars

Aug 28, 2012 - I just updated to Pale Moon ver15 and Webmail now checks at startup. So it seems to work fine for me.

This review is for a previous version of the add-on (2.9.11.1-signed). 

Rated 5 out of 5 stars

starting with 2.9.11 and also 2.9.12, does not check email at startup. Will check after a few minutes though. So, if I am opening FF just to check to see if I have any email, I must click "check now" on the pull down menu or wait 5 minutes. No big deal, but slightly irritating.
Update Aug 28, 2012: Just updated to Pale Moon ver 15 and Webmail now checks at startup. So Add on works fine for me now.

This review is for a previous version of the add-on (2.9.11.1-signed).