You can save Twitch streams that you've done by turning them into VODs or Highlights, and then anyone can watch them.

This is my simple way to start streaming on Twitch using OBS, even if you're brand new. I walk through how I set up my Twitch account, choose what I want to stream, and connect everything using free ...

You can "Whisper" on Twitch to privately chat with someone using a chat command or by going to their profile page, depending on your device.