I am interested in adding custom fields, with which we can do some marketing. For instance, we want to offer new Newsletter subscribers a couple of pages of our new book if the enter the Code “Gimme them pages”. The simplest way I thought of doing that is to add a custom field reading something like “Redeem Code” where it reads “Gimme them pages”.
The problem is that I cannot manage to filter subscribers with custom field entries. Is there a way to identify and filter alle new subscribers using a custom field entry?
Are there different ways to market with the Newsletter plugin?
I appreciate any hints or help.