Attach a clip from the stream that included the reason a Twitch streamer got banned.
I've seen quite a few people get banned now and they cannot decipher what they got banned for in the vague email you send. More to this; streamers can be streaming for 10 hours a day and you expect them to remember 10 seconds of discourse that got them banned? Just attach the "bannable" clip to the email. How are people supposed to consciously appeal a ban when you don't explicity tell them what they did was wrong instead of give a vague "category"?