I have exactly the same problem as Jack. I don't understand why an author tinker with something that works...

Have been starting to get a "detection mode" error to where it constantly asks me to autodetect my accounts, and it has gotten on my nerves to the point of uninstalling.

С октября 2023 года расширение перестало отмечать письма как "прочитанные". После отметки "прочитано" - письма возвращаются обратно как "непрочитанные". Переустановка не помогла.

Our team uses Google Chat on Gmail. It would be good if you supported it.
(google chat notif on Checker Plus for Gmail)

https://support.google.com/chat/answer/9341104?hl=en&co=GENIE.Platform%3DAndroid

Being able to see my new emails at a glance without having to leave the current webpage I'm on in a huge game changer. Can't live without this now, thank you add-on dev!

Cet addon ralentit énormément Firefox lors de son démarrage.

Perfect mail notification extension, does exactly what is promised certainly when you contribute an amount you will have this fixed on most browsers.