register_groups( array( 'mailchimp', ) ); $this->register_fields( array( array( 'id' => 'apikey_list', 'label' => __( 'API Key', 'contact-form-7-connector' ), 'description' => __( 'Mailchimp API key is required for integration with Mailchimp. If want to integrate several forms with Mailchimp, you can enter a key only once here and then use it in the forms. API key can also be entered directly in form settings.', 'contact-form-7-connector' ), 'type' => 'mailchimp_apikey_list', ), array( 'id' => 'double_optin', 'label' => __( 'Double opt-in', 'contact-form-7-connector' ), 'description' => __( 'If the parameter is enabled, a user will be added to list(s) when click by a confirmation link from invitation mail otherwise the user will be added automatically.', 'contact-form-7-connector' ), 'type' => 'checkbox', 'postfix' => true, ), ), 'mailchimp' ); } }