This will get you more info for context, or you can remove the fields just for the email addresses:
SELECT `contacts`.`client_id`, `contacts`.`id` AS `contact_id`, `contacts`.`first_name`, `contacts`.`last_name`, `contacts`.`email`, `services`.`status`, `services`.`date_canceled`, COUNT(`services`.`id`) AS `number_of_services`
FROM `contacts`
INNER JOIN `services` ON `services`.`client_id` = `contacts`.`client_id`
WHERE `services`.`status` = 'active'
AND `services`.`package_group_id` = '1'
GROUP BY `contacts`.`id`
ORDER BY `contacts`.`client_id`, `contacts`.`id`