Currently, to use SMS reminders with Chili Piper you need a paid Twilio account.
Follow the step below and you'll be set up in no time:
1. Go to Integrations In Chili Piper through your Admin Center and click to Connect with your Twilio account
2. Fill out your account and your token which you can find in Twilio
3. Add your details and save
4. Configure your Twilio Account for Chili Piper
5. Create your first reminder