Open Windows Settings, Personalization, Taskbar, Notification area, 'Select which icons appear on the taskbar', then turn Thunderbird 'On'.

sfhowes said

Open Windows Settings, Personalization, Taskbar, Notification area, 'Select which icons appear on the taskbar', then turn Thunderbird 'On'.

Hi, Thank you for your reply, thunderbird is marked as "on" in the taskbar but I am still not getting any notifications and my emails are being marked as read.

Does anyone please have any ideas I'm missing work emails all the time at the moment :(

Do you access the account on other devices, such as a phone, that mark the messages as read, which (for an IMAP setup) marks them as read for all other devices? Or, is another program on the same computer with TB doing the same?

Also, check that notifications are enabled under Tools/Options/General.

sfhowes said

Do you access the account on other devices, such as a phone, that mark the messages as read, which (for an IMAP setup) marks them as read for all other devices? Or, is another program on the same computer with TB doing the same? Also, check that notifications are enabled under Tools/Options/General.

Hi, Thank you again for your help/advice. All devices (ipad/laptops/phones) were being marked as read, I suspect it's to do with outlook but I'm not sure. I have completely uninstalled and reinstalled TB and it seems to be working now so I have done a MozBackup hoping it will stay like this as my previous backup (where it worked fine) didn't work.

Many thanks again for your help :)

some mail providers mark mail as read when it is downloaded. obviously read mail is not new mail and as such should not be listed as new mail. After all as far as Thunderbird knows you have already read it. I would check your settings on the providers web mail to determine exactly what it is doing when mail is downloaded. I know outlook.com ignores Thunderbird's delete messages on pop accounts and instead moves them (after sometimes a long delay resulting in them downloading again) to a folder called POP.

Hi, this is interesting as I have a similar problem but on a mac, just posted, with OSX High Sierra running Thunderbird 52.5. New incoming messages are marked as read, no system notification but I noticed the dock Thunderbird icon briefly flashing a new email then clearing ie.. the app has marked it as read. This could mean it's a Thunderbird bug issue.

In my case, the profile is being corrupted somewhere, not the email or settings. It is not related to other devices set to download new messages so they are no longer held on the remote server.

I know this because if I reinstate the pre-fault profile it cures the problem. If its the first instance you will have to rebuild/ create a new profile.

I don't use Windows but somewhere in your user account there are Thunderbird settings for your user account. Inside there is a profile.

You can create multiple profiles by running thunderbird -p option at the command line and add a new profile on launch.

You can either re create your accounts manually ..tedious or transfer Mail and ImapMail folders from the old profile to the new. See if it works. You might have to re enter passwords... I would probably ignore the extensions and re down load them.

Once you have what you want back up the profile either copy or compress it You can then restore from this if it fails again.

This is a workaround and rescue that worked for me but I don't know why / what is happening to corrupt the data.