Ended soon
After a short hiatus, Twitch has finally brought back emote only chat mode. To enable the feature, type /emoteonly in your Twitch Channel and challenge your chat to speak with only emotes!
🙏💜😻💎🏆🍕🔥🐼👾⚡️🏁 /emoteonly mode is back!
— Twitch (@Twitch) May 20, 2016