It doesn't work, it worked well for the first couple of years then stopped notifying me of new emails.
If I click on my email provider in the drop down window it takes me to my email account but it doesn't notify me of new emails which is the whole point of this add on !

In the Japanese version of Yahoo! Mail(yahoo.co.jp), only the top account is valid, so even if I try to log in to another account, it will become that account. And even if I specify the default account in settings, its symptoms will not change.

And when that symptom appears, character authentication is required each time, so it becomes very difficult to use.

crashes constantly, not worth the time to continually re-imput the information

this add-on does not work well when there are two accounts gmail or yahoo or outlook charges one account but not the other.

Le daría 5 estrellas si respetara el requerimiento de la contraseña maestra de Firefox. Lastima que ya no puedo regresar a la versión 3.5.23

This add-on is not working with Firefox 58 & tracking protection.
It doesn't work even including all the exceptions.

I added gmail, hotmail, and yahoo accounts. None of them work. At all.

doesn't work.

I'm really sorry to give To
This add on Which was one of the best
Just one star.
question: Is there a chance that X-notifier Will return to work on the firefox

Thank you for your work, but:

1) This add-on is not working when built-in FF' Tracking Protection is "on".

2) Also, is not working the external sound URL.

This plugin do not do nothing, I loged to my account but it never notify me!

rss doesn't work with GMAIL I shouldn't have to give the addon my login info

No longer shows new mail for yahoo 57.0.1

Was working fine, but doesn't now notify new email in yahoo mail inbox (Firefox 57.0.1)

My x-notifier hasn't been working for Hotmail for more than a year. I went back to the old version which still wouldn't show incoming mails but at least by clicking on x-notifier I could go to directly to my Outlook inbox. When Firefox updated itself (without asking me) yesterday, the old version was replaced with the newest version which still doesn't check emails. It is completely useless.

ツールバーのX-notifierボタンからメールを開こうとすると毎回、文字認証画面が出て、入力してからログインすることになってしまいます。
また起動ページをyahooにしているのですが、Firefoxを起動するたびにログイン状態を維持できていないログアウト状態になっています。Gmailは問題ありません。

Ya no me sirve para Firefox 57

depuis le passage aux version, de très nombreux bug, plus moyen d'utiliser l’extension comme c'était le cas avec la 3.5...

Говорит "No new messages", хотя точно есть новое письмо.

Nothing is working

x-notifier 4.1.4 doesn't work well. It show if there are new emails, but clicking on "Open" it don't access / not open yahoo e-mail (but it only open login page of Yahoo to insert name and password). In this way it is useless :)
Mario (I)

Don't check the emails.

Does not work. 4 months tried to run this nonsense :(((
In the furnace it's an application.