How to send a message (if necessary) those who is already in the bot (telegram and viber)?And how to view the phone numbers of these people?
If you're bot is already Live and want to send a message to all users, there is one way. You can use the Re-engagement node type feature to send messages to all user's on a specific date/time.
I'm afraid it isn't possible to view the phone numbers of user's. However, you can use input node feature to get phone numbers from user's.
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