New mail indicator envelope for Thunderbird in Ubuntu 18.04

[jan (G J (Jan) Greeff)]

I miss one little detail from my old 16.04 that I have not been able to find or activate in 18.04: a mail envelope in the top bar that turns blue when there are new unread mails in Thunderbird. How can I install or activate this feature in Ubuntu 18.04 Unity 64-bit? I installed Birdtray as suggested here previously, but it does not do what is required.

[abhishek (Abhishek Prakash)]

It seems like Birdtray is the best (and only) option you have got, unfortunately.

[callpaul.eu (Paul)]

You did find an answer to this before at

Thunderbird - New Message Icon

In WIN10, every time I receive an email, Thunderbird shows an envelope icon in panel tray Now, I’m changing to Linux and I realize I don’t’ have this notification. I think this notification is native form Thunderbird, I found plugins and other programs to show an icon when I have email in certain accounts. My question is: -If you use Thunderbird, could you please confirm if you have or not any icon in tray when you receive new email Thanks, Jorge

There is a gnome extension

https://extensions.gnome.org/extension/1505/new-mail-indicator/

But not sure it works on newer versions as have stopped using thunderbird myself so cannot test it

[jan (G J (Jan) Greeff)]

My apologies, for some reason this answer did not reach me. Thanks. Does not seem to work on Ubuntu 18.04. I will have to fiddle with the Birdtray settings to see if it can do the job.