Which properties should be updated?
section and click Add Mapping at the bottom, and then click Create new field. Then, type in the name of the custom field as it appears in your Customer.io instance and hit Save. After that, you can select the field from your source that you want to send into that the Customer.io custom field.Mapped Fields
section, click Edit, click Add Mapping at the bottom, and then click Create new field. Then, type in the name of the custom field as it appears in your Customer.io instance and hit Save. After that, you can select the field from your source that you want to send into that the Customer.io custom field.