I want to identify the newsletters that arrive in our main mailbox, which is linked to our zammad, and close them automatically.
The best way to do this, I think, is to identify e-mails with the “list-unsubscribe” header, because all newsletters sent by trusted providers have this header.
Is it easy to add this feature?
For the moment, I added list-id with regex “not empty” but not sure it is the good approach.
Here is an example of newsletter received today and which have only List-Unsubscribe property to identify it.
So, not working with List-Id or all other available filter tag.