It doesn't work anymore per end of June 2017. Tried to update to 4.0.3 but it's said that the add-on is corrupted and can't be installed. Gmail stopped working, then suddenly Yahoo mail too. Please update because this was a very important and useful add-on!

I had personally to return back to FF42, taken ""volunteering"" all the security risks, because the FF's guys decided to "offer" me more security by messing up all my add collection, almost all my FF desktop and eventually all my every day working life. That is even far beyond an annoying and stupid paternalism - this is dictatorship!!!

As I am seeing it, unfortunately we all are doomed. Our big problem consisted in two points:
a) FF is still by far the best browser for anyone who wants to works seriously in internet, comparing with all the other browsers in the market.
b) FF lately totally sucks!!!

I love this add-on !

Why did you have to change this addon why? New settings in page was and always will be pointless. I use black theme and now I can`t see anything when I click on email icon, background is gray and fonts are black :( lucky I don`t use settings often, but could you at least change font colore? I use "FT DeepDark " is the best one for Firefox, test it and you will see how it looks...

I will stay with older version with normal settings and with normal window when I click on email icon... Sry but I just don`t like new look at all and settings in page oh good no thanks. Don`t even know what is wrong with (Not you) all devs to set settings in page and not made/leave normal window with settings.

Remet la version 3.5.23 et tu récupères tout..cela fonctionne très bien,sauf que tu devras la réinstaller tous le 4 ou 5 jours..!
Désactive la mise à jour dans"plus"..

Please, bring back the right click menu. I rolled back to version 3.5.23 in the meantime. Thanks for this great addon.

after v4 it cant login to my 2 yahoo account at the same time anymore :( and it's slow to switch :(

When i upgrade from 3.5.23 to 4.0.2,the sidebar of X-notifier disapper and i need this.

Revert back to Version 3.5.23 works.

https://addons.mozilla.org/en-US/firefox/addon/xnotifier/versions/?page=1#version-3.5.23

I am using the ESR version, on Puppy Linux Slacko 5.6 32bit. i have used xnotifier for several years, so I am very disappointed.