I'm facing the problems while making Messenger bot broadcast message. I can make it broadcast at first, but I find that when the bot have to send message to a big amount of users (around 100-200 users). It proceed very slow and some users don't get the message.
I'd like to ask you guys that:
How do you write code to make bot do broadcast? For me, I just put sendTextMessage it the loop which run all page-scoped ID of users. As far as I know, Facebook don't provide specific broadcast or batch sending command right?
According to documentation, Send API do have its limit, but no number specified. It say that 'Messenger Platform supports a high rate of calls to the Send API'. I'd like to know how high is 'high rate' ?