Hi, We are currently integrating our App with Constant Contact and are evaluating the appropriate endpoint for subscription forms. Could you please advise on whether we should use the createContact(v3/contacts) or createOrUpdateContact(v3/contacts/sign_up_form) endpoint?   From our understanding, both methods seem to support double opt-in, depending on account settings. While the createOrUpdateContact(v3/contacts/sign_up_form) endpoint appears semantically suitable, our tests indicate that it can update contact fields without confirmation. Is this expected behavior?   Thank you for your assistance.     ... View more