I send mailings two ways: via civiCRM newsletters and via SimpleNews newsletters. The problem is that I then have two different email lists, one in civiCRM and one in Drupal for SimpleNews. If users want to stop receiving emails, they have to unsubscribe twice. I would like people to be able to unsubscribe from either list, and be removed from both. So there are two parts to this: (1) on unsubscribe from SimpleNews, remove from civiCRM mailing list, and (2) on unsubscribe from civiCRM mailing list, remove from SimpleNews mailing list.
For (1), I was trying to create this rule: When an email is unsubscribed from SimpleNews (Action), then the email is also removed from civicrm group (Event). But I receive an error message: Data selector site:current-user:roles: for parameter contact is invalid. What should the data selector be? The only one that comes up as an option is "site:current-user:roles"
For (2), I have no idea how to do this. Any suggestions would be appreciated.
Final Note: What I am trying to do may not be possible without using some third party such as MailChimp to coordinate email lists.