Docs: API Reference, Tutorials, and Integration

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Communications

Twilio APIs give you flexibility, global reach, and reliable deliverability to connect with customers anywhere.

Twilio Messaging Documentation

Send and receive text messages across SMS, RCS, WhatsApp, MMS, and more.

Twilio SendGrid Documentation

An email API that reliably delivers with a proprietary MTA.

Twilio Voice Documentation

Voice APIs to make, receive, monitor, and capture data from calls at global scale.

Twilio Phone Numbers Documentation

Toll-free, A2P 10DLC, short codes, and Alphanumeric Sender IDs to deliver your communications.

Twilio Elastic SIP Trunking Documentation

SIP trunking service to achieve global PSTN connectivity for VoIP infrastructure.

Twilio Flex Documentation

A digital engagement center for personalized contact center, support, and sales interactions.

Twilio Video Documentation

Video API and SDKs for quality video calling you can embed into any application.

Twilio SendGrid Marketing Campaigns Documentation

A suite of email marketing tools from Twilio SendGrid to design and send engaging emails.

Twilio Event Streams Documentation

A configurable, centralized stream of Twilio event data that you can send to any team.

Twilio TrustHub Documentation

Centralized onboarding for SHAKEN/STIR, CNAM, and phone number verification.

Customer data

Unlock insights from your customer interactions to learn exactly how, when, and where they want to hear from you.

Twilio Segment Documentation

Connect all your first-party data in a single platform to power personalized customer experiences.

Twilio Segment Documentation

Take control of data quality at scale with intuitive data controls, a shared data dictionary, and real-time validation.

Twilio Segment Documentation

Unify customer data across channels, track real-time interactions, and personalize at scale.

Twilio Engage Documentation

Personalized omnichannel campaigns with cross-channel orchestration on a data-first platform.

Twilio Segment Documentation

Automate and scale data privacy to keep your customer data secure and streamline regulatory compliance.

Authentication

Fight fraud and keep customer accounts secure without adding friction to your user experience.

Twilio Verify Documentation

A turnkey API for multichannel one-time password delivery and fraud prevention.

Twilio Lookup Documentation

Validate phone numbers to mitigate fraud risk with line type intelligence, phone number risk assessment, and identity match.

Conversational AI

Design and deploy virtual agents, automate repetitive tasks, and personalize interactions at scale.

Twilio Conversational Intelligence Documentation

Advanced AI-powered voice interactions with speech-to-text and natural-sounding text-to-speech.

Twilio Conversational Intelligence Documentation

AI-powered language analysis and transcription for voice and messaging interactions to tap into customer context.

Build, deploy, and operate apps at scale with Twilio developer tools.

Twilio Functions Documentation

A serverless environment to build communication apps with no servers to spin up or infrastructure to maintain.

Twilio Studio Documentation

A drag-and-drop builder to create communication workflows.

Twilio Functions Documentation

A serverless environment to quickly create production-grade, event-driven Twilio applications.