User already registered in Ometria, with EXPLICITY_OPTEDOUT
=> <Spree::User id: 2382720, email: "wondrbly-stg4-sync@yopmail.com", persistence_token: nil, perishable_token: nil, last_request_at: nil, login: "wondrbly-stg4-sync@yopmail.com", ship_address_id: nil, bill_address_id: nil, authentication_token: "uUJdd1MNJJS9x1gsZeCq", created_at: "2018-05-17 21:37:58", updated_at: "2018-05-17 21:37:58", spree_api_key: nil, firstname: "Jess", lastname: "Bach", raw_confirmation_token: "35gKsUFnxuL3Wz4yUjyS", referred_user_token: "KCDE3aGtYEJzAq2m2Q41", sent_emails: [], email_unsubscriptions: [], nps: nil, settings: nil, deleted_at: nil, signup_country_id: 44, marketing_opt_in: false, email_tracking_token: "jwGZMOzpSjbsCT3V6TrZUS-5DuSAUwRY", signup_locale: "de", signup_source: "onsite:co">
When trying to send a double optin email: