Requiring double opt-in

If you need to enable double opt-in for your lists, you can do so using the tml_mailchimp_subscriber_status filter. Consider implementing the following code:

function filter_tml_mailchimp_subscriber_status( $status ) {
	return 'pending';
}
add_filter( 'tml_mailchimp_subscriber_status', 'tml_mailchimp_subscriber_status' );