Pros: It can handle Multiple Google Accounts well. (Previously X-notifier(not Neo) needs re-login to the other Google account.)
Cons: It can not keep accounts information. (Previously X-notifier(not Neo) can keep them.) Accounts information on the dashboard and the right click menu of the icon disappear automatically every time. I guess this is a side effect of Neo's automatic login detection. So, I still need to use X-Notifier(not Neo) to keep my account settings.
Conclusion: Neo has not yet been able to become a successor to X-Notifier.

Hace ya un tiempo que lo uso, manejando cuentas de hotmail y gmail. Me parece ligero y útil; como siempre gracias por los complementos útiles.

X-notifier 이용중이었는데 네이버, 다음 오류나서 G메일과 네이트만 이용중이었습니다.
기존 Neo는 별 효용성이 없었는데 근래 업데이트 되어서 설치해보니 G메일, MS메일, 네이버 잘 되는군요.
다만, 다음은 카카오 계정 통합으로 안 되고, 네이트는 아직 지원 안 되는군요.
X-notifier 버리고 X-notifier Neo로 갈아 타고는 싶은데 다음과 네이트가..
이 리뷰는 보신다면 다음(카카오) 문제 해결과 네이트 계정 추가를 부탁드립니다.
그리고 유용한 애드온에 늘 감사드립니다.

It doesn't recognize my aol.com email. Google and Outlook work.

No tiene opción para Yandex Mail.

No me reconoce el email aol.com. Tanto para gmail con varias cuentas, y yahoo de lujo.

This add-on is not being updated and it barely works. It will only check one Gmail account, and you can't even force it to check another one. You have to uncheck everything and only check that one, and then it probably won't check it. This used to be such a great little tool, but now it's almost useless.

comprehensive functionality
very fast support

It works many times better than X-notifier.

It does not reset after opening Gmail, and deleting mails....no options other then check interval????

Le quitaron muchas opciones del X-notifier que lo hacían bueno

Better than X-notifier

i liked this addon very much. it's been working so well. thank you.
the recent update 84.0.2 has broken this addon. i see that the new update version 2.2.8 has just been released. but instead of showing unread primary message count, it shows all unread email count. i hope it will get fixed. thanks.

Would be nice if containers would be supported (Google Container addon)