My Mautic version is : V3.1.2
My PHP version is:7.3.27
My Database type and version is: mysqlnd 5.0.12-dev
My problem is: I would like to ask for feedback from a mailout that I am going to create and was wondering how I would be able to receive the feedback from the recipient of the email.
These errors are showing in the log:
Steps I have tried to fix the problem: