Some time a few months ago my email notification icon started behaving inconsistently. Sometimes it works; some times (usually) it doesn't. If it doesn't work when I first boot up it seem to not work until I reboot (and usually not then).
I'm running Thunderbird. (TB 8.0 now. Who knows what it was a couple of months ago.) In the Notifications Icon Area display Thunderbird is set to "Show only notifications" and has been that way for as long as I can remember.
Around the time it stopped working I had a hardware failure that necessitated a reinstallation of Windows. I think
the notification was failing before the reinstallation but I can't be sure.
Is there anything I should be looking at on the Windows side of the notification interface (other than the notification customization panel)? Quite a TB users have reported this on the TB forum but nobody has found a solution. I don't know if any other email client programs have this problem.