I just shipped a feature where customers can add Jolly to as many Slack channels as they want. They can also limit Jolly to send celebration messages only when channel members have a birthday or a work anniversary.
This is useful for large organizations that want to separate their celebrations by team; it doesn't matter whether they are 20 employees or 350, they tailor Jolly to their own needs.
Read more on: https://usejolly.com/changelog/2024-03-26-celebrate-in-multiple-channels