Build communication features with Twilio: SMS messaging, voice
Multi-channel communication platform: SMS, voice calls, WhatsApp, and 2FA verification. Covers SMS sending with E.164 validation, message segmentation awareness, and delivery callbacks; supports 80 messages per second default rate limit Twilio Verify service for OTP and 2FA across SMS, voice calls, email, and WhatsApp with built-in fraud prevention and rate limiting TwiML-based IVR systems using XML markup for voice menus, keypad/speech input gathering, call routing, and voicemail recording Includes request signature validation, credential management best practices, and session tracking patterns for stateless webhook architectures Twilio Communications Build communication features with Twilio: SMS messaging, voice calls, WhatsApp Business API, and user verification (2FA). Covers the full spectrum from simple notifications to complex IVR systems and multi-channel authentication. Critical focus on compliance, rate limits, and error handling. Patterns SMS Sending Pattern Basic pattern for sending SMS messages with Twilio. Handles the fundamentals: phone number formatting, message delivery, and delivery status callbacks.
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