ViewerLabs, a prominent Twitch viewer bot, has been shut down owing to legal action. However, if you’re seeking an alternative strategy to increase your Twitch viewership, you have plenty of choices.

When you host a channel on Twitch, people who visit your channel while you're offline will see that other channel's stream ...

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.