My Mautic version is: 4.1
My PHP version is: 7.4
My Database type and version is:
mysql Ver 15.1 Distrib 10.3.31-MariaDB
My problem is:
There are multiple values in List-Unsubscribe header of the emails send through Mautic:
I suspect due to this Gmail is not showing the unsubscribe button which it normally shows right next to the sender email address.
Does anyone know how to fix this?