List options offer a convenient way to store customer data alongside their list subscriptions. This data can be either customer-defined text or stored as a serialized JSON field. This valuable feature enhances the flexibility and customization potential of your list memberships.

For instance, you might want to store additional details like the state or territory of each subscriber. With the list options field, you can seamlessly incorporate this information, resulting in more personalized list subscriptions.

To access a subscriber's list options, simply navigate to the subscribers' list membership profile section, located just below their list subscription (refer to the example below).