Hi, as i understand there’s no api to get PM’s and no way to send PM messages to user. Actualy i would like to suggest both of this features. Chat PM is usefull for creating bots with extending features and remove useless spam to everyone in the chat (for example ban reason, or commands like !topic, can be sended through Chat PM, no need to display the, globaly).
Currently chat doesn’t support private messages. It only supports messages sent to a channel. Might be a useful feature to add though if done right.
If you are talking about Twitch messages there is a feature request for that. Although I really don’t like the idea of bots sending me Twitch messages without explicitly granting permission.