Hello,
I’m currently using the newsletter plugin with the mailjet API plugin integration.
In the mails the list-unsubscribe in header is linked to mailjet directly, so if a use unsubscribes via notification on their email tool, the user only sends an information to unsuncribe the user from mailjet and not from the newsletter plugin. The mailjet support told me, that they add their list-unsubsribe information to the header in case they won’t receive any other information for that.
Main question: How can I add the correct list-unsubscribe information to the header if I want to send it over mailjet api plugin?