Question Insert Header List_Unsubscribe in Postfix

[CobraArbok]

Server operating system version

Ubuntu 22.04.1 LTS

Plesk version and microupdate number

18.0.50

I want to insert the List_Unsubscribe header in Postfix so that it can also be used by clients like Thunderbird and not only by WebMail Roundcube.
How can I do it?

 

[veliseremet]

I want to insert the List_Unsubcribe header too. I am also using Thunderbird. Please let me know if you find any solution!

 

[Peter Debik]

You'll find plenty of step-by-step guides with a Google search like "list_unsubscribe postfix".