Twilio

SMS, voice, programmable phone numbers. The standard for phone-based features.

Twilio is the most common SMS / voice provider. Use for SMS auth (2FA), notification SMS, call routing, IVR.

Full walkthrough being written.

Common uses

• 2FA via SMS code
• Booking reminders via SMS
• Order updates
• Voice IVR for support hotlines

Setup

TWILIO_ACCOUNT_SID, TWILIO_AUTH_TOKEN, TWILIO_FROM_NUMBER in vly secrets. Use the Twilio SDK from a Convex action.

Related

WhatsApp

For WhatsApp Business.

Telegram

For Telegram bots.

Built-in auth

SMS 2FA via Twilio.