I’m building a bot for building habits. It needs to check in with all opted in users every day to see if they’ve done their habit, and then either celebrate, or help them out.
How can I trigger a conversation to initiate for EVERYONE every day at a certain time?
Hi Robin, 
You’d be able to use the Broadcast service in order to send the message. This could be triggered by hitting a webhook, which you could time to do from another flow every hour by using the Wait service.
Hopefully this gives you a few ideas on how to get started with this. Any problems just shout. 