how to add the list-unsubscribe header to all outgoing emails using proxmox?

Probably can be done with a 'Modify Field' action - Field 'List-Unsubscribe' Value: the address you want to set the header to
check the reference documentation on the subject:

very shortly:
* In the GUI (Section Mail Filter)
* create on Action Object -> Modify Field -> enter 'List-Unsubscribe' as Field and the address you want in the list-unsubscribe header as Value
* create a Rule and add this Action
* every mail will get the header set.
  • Like
Reactions: mihaii8
Hello, I am trying to perform the same procedure, but I do not see that option: Action Object -> Modify Field.
please see the image attached.
Can you help me please?


  • 2024-04-15_21-53-51.png
    85.1 KB · Views: 5


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!