Minimize thunderbird in Ubuntu to the taskbar

It should be a common and necessary function to minimize the number of email clients to the taskbar, or to run on the background. I don't know why Thunderbird is not provided directly, but it must be implemented through plug-ins. (The function of email receiving and email writing is also implemented as a plug-in so that users can download and install it and use it again .) On windows, the Mini mizetotray plug-in can be implemented. However, it took me some time to find out on Ubuntu, that is, MozillaNewMailIcon,

It should be a common and necessary function to minimize the number of email clients to the taskbar, or to run on the background. I don't know why Thunderbird is not provided directly, but it must be implemented through plug-ins. (The function of email receiving and email writing is also implemented as a plug-in so that users can download and install it and use it again .)

On windows, the Mini mizetotray plug-in can be implemented. However, it took me some time to find out on Ubuntu, that is, Mozilla New Mail Icon. This plug-in function is very simple, you can hide the main window of thunderbird and receive notifications when you receive new emails. However, these functions are sufficient.