I have just one newsletter for my website. I want new users to be given the option to subscribe on the registration form (so I don't want a required list), but I want the default to be subscribed. Right now, the default is always not subscribed. Is there a way to do this through the mailchimp module (or do I have to use Drupal hooks)?
If it's not possible through module settings, has anyone done it with hook_form_alter? Any hints?