TwilioDevsBuild a real-time AI voice assistant using Twilio Voice and Google Gemini. In this step-by-step tutorial, you’ll connect live phone calls to Gemini using Twilio ConversationRelay, FastAPI, and WebSockets — with incredibly low latency.
In this video, you’ll build a production-ready voice AI assistant that can answer real phone calls and maintain conversation context.
When someone calls your Twilio number: • Twilio hits your /twiml endpoint • TwiML opens a WebSocket connection • Twilio streams speech transcripts in real time • Your server sends prompts to Gemini • Gemini generates a response • Twilio converts it back to speech instantly
The result: a fully conversational AI assistant powered by Gemini 3 Flash.
What you’ll learn: • How Twilio ConversationRelay enables low-latency AI calls • How to generate and securely manage a Gemini API key • How to configure a Twilio phone number for voice webhooks • How to build a FastAPI WebSocket server • How to maintain per-caller session memory using Call SID • How to prevent memory leaks in high-volume call systems
Timestamps: 00:00 – Introduction & architecture overview 00:35 – End-to-end call flow explained 01:09 – Required tools (Twilio, Gemini, Enro/ngrok) 01:45 – Setting up FastAPI & dependencies 02:17 – Environment variables & system prompt 03:35 – Session management with Call SID 04:12 – TwiML & ConversationRelay breakdown 05:35 – WebSocket event handling 06:12 – Maintaining conversation context 06:56 – Cleanup & session teardown 07:36 – Exposing your server with Enro 08:56 – Configuring your Twilio number 10:11 – Live demo call with Gemini 11:17 – Context awareness & latency discussion 11:53 – Next steps & enhancements
Tech Stack: Python FastAPI WebSockets Twilio Voice TwiML Google Gemini API ConversationRelay
From here, you can extend this assistant with tool calling, external APIs, CRM integrations, or custom TTS providers like ElevenLabs.
Subscribe to TwilioDevs for more hands-on AI, voice, and real-time communication tutorials. 💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevs
Your Own AI Voice Assistant | Gemini + Twilio TutorialTwilioDevs2026-03-02 | Build a real-time AI voice assistant using Twilio Voice and Google Gemini. In this step-by-step tutorial, you’ll connect live phone calls to Gemini using Twilio ConversationRelay, FastAPI, and WebSockets — with incredibly low latency.
In this video, you’ll build a production-ready voice AI assistant that can answer real phone calls and maintain conversation context.
When someone calls your Twilio number: • Twilio hits your /twiml endpoint • TwiML opens a WebSocket connection • Twilio streams speech transcripts in real time • Your server sends prompts to Gemini • Gemini generates a response • Twilio converts it back to speech instantly
The result: a fully conversational AI assistant powered by Gemini 3 Flash.
What you’ll learn: • How Twilio ConversationRelay enables low-latency AI calls • How to generate and securely manage a Gemini API key • How to configure a Twilio phone number for voice webhooks • How to build a FastAPI WebSocket server • How to maintain per-caller session memory using Call SID • How to prevent memory leaks in high-volume call systems
Timestamps: 00:00 – Introduction & architecture overview 00:35 – End-to-end call flow explained 01:09 – Required tools (Twilio, Gemini, Enro/ngrok) 01:45 – Setting up FastAPI & dependencies 02:17 – Environment variables & system prompt 03:35 – Session management with Call SID 04:12 – TwiML & ConversationRelay breakdown 05:35 – WebSocket event handling 06:12 – Maintaining conversation context 06:56 – Cleanup & session teardown 07:36 – Exposing your server with Enro 08:56 – Configuring your Twilio number 10:11 – Live demo call with Gemini 11:17 – Context awareness & latency discussion 11:53 – Next steps & enhancements
Tech Stack: Python FastAPI WebSockets Twilio Voice TwiML Google Gemini API ConversationRelay
From here, you can extend this assistant with tool calling, external APIs, CRM integrations, or custom TTS providers like ElevenLabs.
Subscribe to TwilioDevs for more hands-on AI, voice, and real-time communication tutorials. 💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevs
#Twilio #GoogleGemini #VoiceAI #FastAPI #WebSocketsA2P 10DLC Campaign with Twilio - First Time SuccessTwilioDevs2026-04-09 | 10DLC registration made simple. Learn how to get A2P approval fast with Twilio, avoid rejections, and submit compliant campaigns step by step.
Struggling to get your 10DLC campaign approved? You’re not alone. Most rejections come down to missing consent, unclear opt-in flows, or incomplete registration details.
In this video, we walk through a complete step-by-step guide to 10DLC registration, including how to document user consent, meet A2P compliance requirements, and submit a campaign that gets approved the first time.
You’ll learn: - What 10DLC, A2P messaging, and campaigns actually mean - How to properly collect and document user consent (opt-in/opt-out) - The exact privacy policy language required for approval - How to structure web forms, verbal scripts, and SMS keyword opt-ins - Common reasons campaigns get rejected — and how to avoid them - A proven pre-submission checklist to improve approval rates
Whether you're using Twilio or another messaging provider, these principles apply across carriers and platforms.
Chapters: 00:00 What is 10DLC? Complete Registration Guide 00:35 10DLC Terminology Explained (Consent, Opt-In, A2P, Campaigns) 01:40 10DLC Rules: Consent & Transparency Requirements 02:14 How to Provide Proof of Opt-In (Web, Phone, Forms) 02:46 10DLC Campaign Submission Overview 03:19 Key #1: User Consent Requirements (Avoid Rejections) 03:54 Web Form Opt-In Best Practices (Checkbox Rules, Legal Copy) 04:28 Hidden Form Tips (Login Screens, Screenshots for Approval) 05:02 Verbal Consent Scripts for 10DLC Compliance 05:37 Physical Forms & Paper Consent Requirements 06:16 SMS Keyword Opt-In Setup (START, JOIN, Auto Reply) 06:49 Internal Messaging Rules (Employees Still Require Consent) 07:23 Key #2: Privacy Policy Requirements for 10DLC 07:53 Required Privacy Policy Clause (No Data Sharing) 08:28 Key #3: Brand Consistency for Campaign Approval 09:00 ISVs & SaaS: Registering Campaigns for Clients 09:32 Key #4: Ideal 10DLC Submission Checklist 10:06 Campaign Use Case Selection (Avoid Mismatches) 10:40 Mixed Campaigns: Marketing vs Transactional Rules 11:15 Message Samples (HELP/STOP Compliance + Branding) 11:48 Final Checklist for 10DLC Approval Success 12:19 Why 10DLC Compliance Matters (Trust & Deliverability)SIGNAL Swag Takeover (My Apartment is Gone) #event #swag #signalTwilioDevs2026-03-31 | SIGNAL, Twilio's annual flagship event, is happening May 6-7 in San Francisco. Developers can call or text +1-7SIGNALDEV or +1-774-462-5338 for a unique developer sign-up experience and a potential discount. We can't wait to see you there!
💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevsConnect Twilio to Lovable AI (its actually easy) #twilio #ai #developmentTwilioDevs2026-03-26 | Integrate Twilio with Lovable for enhanced AI app communication. Setup Twilio easily by adding your credentials in Lovable's settings. With this integration, you can use artificial intelligence to build features like whatsapp automation or send SMS.
📝 Blog post here: twil.io/card-gen 📢 Lovable Announcement: https://docs.lovable.dev/integrations/twilio 💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevsBuild WhatsApp AI Agent | Node.js, Twilio, OpenAI TutorialTwilioDevs2026-03-12 | Build a WhatsApp AI agent with Node.js, Twilio, and OpenAI that remembers context, answers questions, and handles real conversations. In this tutorial you'll learn how to create a context-aware WhatsApp chatbot that can manage reservations, answer FAQs, and escalate to humans when needed.
Most automated messaging systems break when conversations get messy. Users send information out of order, change their minds, or expect the system to remember what they already said. In this video, we build a WhatsApp AI agent that actually handles real-world conversations.
Using Twilio WhatsApp messaging, Node.js, and OpenAI, you'll learn how to: • Build a context-aware AI agent for WhatsApp • Store conversation context so the agent remembers users • Answer common questions using a structured FAQ system • Extract structured information from natural messages • Guide users through a reservation workflow without repetitive prompts • Escalate conversations to a human when needed • Run and test everything locally using the Twilio WhatsApp Sandbox
Instead of forcing users through rigid forms, this AI agent interprets messages naturally. If a user says “reservation for 2 at 7pm tonight”, the agent extracts the details immediately and only asks for missing information.
You'll also learn how to: • Clone and run the project locally • Configure Twilio credentials and environment variables • Use ngrok to expose your local server for Twilio webhooks • Connect inbound WhatsApp messages to your AI agent logic • Extend the system with databases, booking platforms, or voice AI
This project is designed as a developer-friendly starting point so you can plug it into real systems like CRM tools, booking platforms, or customer support workflows.
Chapters: 00:00 Why most WhatsApp automation fails 00:34 What this AI agent can actually do 01:04 Setting up the project locally 01:36 Configuring environment variables 02:10 Connecting Twilio WhatsApp Sandbox 02:42 Testing inbound messages 03:14 How the AI agent works internally 03:46 Managing conversation context 04:21 Extracting structured reservation data 04:50 Where to extend the system nextCreate an Intelligent WhatsApp Assistant with Twilio and OpenAI #aiagent #tutorial #nodejsTwilioDevs2026-03-12 | Build a WhatsApp AI agent with Node.js, Twilio, and OpenAI that remembers context, answers questions, and handles real conversations. In this tutorial you'll learn how to create a context-aware WhatsApp chatbot that can manage reservations, answer FAQs, and escalate to humans when needed.
💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevsTwilio Signal 2026 is Calling Developers #event #sanfrancisco #techTwilioDevs2026-03-05 | SIGNAL, Twilio's annual flagship event, is happening May 6-7 in San Francisco. Developers can call or text +1-7SIGNALDEV or +1-774-462-5338 for a unique developer sign-up experience and a potential discount. We can't wait to see you there!
💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevsGoogle Gemini Voice AI Demo That Actually Works #gemini #ai #shortsTwilioDevs2026-03-04 | Learn how to build a functional voice AI assistant using Google Gemini and Twilio Conversation Relay.
See the full video here: youtu.be/Pm15zVOkFWs 💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevsThe Missing Piece in AI Agent Security #AIagents #techTwilioDevs2026-02-26 | OpenClaw showed us the future of AI Agents, but there are major security risks. Agentic AI needs a secure layer that keeps humans in the loop for critical decisions. Twilio is introducing Agent to Human protocol to do exactly that. A2H adds cryptographic consent and secure AI authorization for your autonomous agents.
#AI #OpenClaw #A2H #AISecurity #Developers #TwilioTwilio A2H Agent to Human Protocol AnnouncementTwilioDevs2026-02-23 | Twilio is introducing A2H, an open-source protocol for agent-to-human communication, addressing current limitations of AI agents. It highlights how this protocol enables AI agents to interact with users for various actions, improving overall communication skills. By leveraging agentic AI, this system design allows for more effective human-AI collaboration.
If you’re building AI agents with OpenAI, MCP, or Twilio, A2H standardizes agent-to-human communication with structured intents like AUTHORIZE, INFORM, and ESCALATE.
#AIAgents #HumanInTheLoop #OpenSourceAI #WebAuthn #Passkeys #MCP #TwilioTwilio SMS that actually works #python #tutorialTwilioDevs2026-02-12 | You can send your first SMS message with Twilio and Python in just a few lines of code. Check out the full tutorial here on how to send SMS messages with Twilio.
Learn more: Full Tutorial Here: youtube.com/watch?v=kb9aV_tjY-0Send your first RCS message with Twilio in minutesTwilioDevs2026-01-28 | Send your first RCS message with Twilio (branding + SMS fallback + carousel) in minutes—step-by-step in the Console + Node.js, with Insights + carrier approval.
RCS (Rich Communication Services) lets brands send verified, branded messages—with high‑res images, videos, buttons, and carousels—directly in a user’s native messaging app. In this walkthrough, Philipe (Google RCS) and Anthony (Twilio Dev Evangelist) show how to go from zero to a working RCS sender, test on a real device, configure SMS fallback, send a message via Twilio Messaging Services, build a carousel with the Content Template Builder, monitor delivery in Messaging Insights, and finally prep what you need for carrier approval.
What you’ll learn: - Create an RCS Sender in the Twilio Console (verified brand profile) - Add a test device and send a test RCS message - Configure a Messaging Service with RCS + SMS fallback - Send RCS using Node.js (Twilio helper library) - Build and send an RCS carousel using Content Template Builder - Track delivery + errors with Messaging Insights - Submit for carrier approval (required assets + compliance steps)
Chapters: 00:00 Intro: RCS + Twilio overview (Google RCS x Twilio) 00:37 What we’ll build (sender, test device, fallback, carousel, insights, approval) 01:06 Why RCS Sender branding matters (verified profile + trust) 01:38 Create an RCS Sender in the Twilio Console 03:20 Add a test device + send a test RCS message 04:27 Create a Messaging Service (RCS sender pool) 05:00 Add SMS fallback number (when RCS isn’t available) 06:06 Send an RCS message with Node.js (Messaging Service SID) 07:16 Build a carousel with Content Template Builder 09:04 Monitor delivery + analytics in Messaging Insights 10:12 Carrier approval: what to submit + what gets locked after submission 10:45 Wrap-up: where to learn more (RCS docs + onboarding + free trial)
#RCS #Twilio #Google #RBM #MessagingAPI #Nodejs #Developer #APIs #CustomerEngagement #SMS #Carousel #ChatFeatures #MessagingInsights #SystemDesign #DevRelTwilio Cyber Week 2025 Emoji Award ShowTwilioDevs2026-01-22 | Welcome to the Twilio Cyber Week 2025 Emoji Awards! 🎉 We're thrilled you're here to celebrate this special cyber event with us! Get ready for a night of exciting awards and plenty of emojis, accompanied by a grand fanfare. This ceremony promises to be memorable!
Subscribe for more fast, developer-focused insights on messaging, customer engagement, and what real-world traffic spikes teach us.
💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevs5 Ways WhatsApp Calling works with Twilio VoiceTwilioDevs2026-01-15 | 5 Ways WhatsApp Business Calling works with Twilio Voice: - Use Twilio Studio to create an IVR - Add WhatsApp to your Flex Contact Center - Use ConversationRelay to connect WhatsApp Voice to an AI Agent - Use Conversational Intelligence to see how AI or Human agents are doing - Use Twilio Functions to write custom code for your voice calls
💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevsIntegrating ElevenLabs Voices into TwilioTwilioDevs2026-01-15 | Say goodbye to robotic-sounding IVRs 👋
In this video, you’ll see how to plug ElevenLabs into Twilio ConversationRelay so your Twilio Voice agents can talk, listen, and respond in a natural, human-like voice.
You’ll learn how to: - Clone and run the ConversationRelay demo app (Node.js + Fastify + WebSockets) - Expose your local server with ngrok so Twilio can reach it - Configure your .env with OpenAI, Twilio Account SID, and ngrok URL - Pick and customize an ElevenLabs voice (voice ID, model, speed, stability, similarity) - Build the full ElevenLabs voice string (ID + model + parameters) - Wire your Twilio phone number to your /twiml webhook - Call your number and hear your AI assistant answer in an ElevenLabs voice - Behind the scenes architecture
FAQs:
What is Twilio ConversationRelay? ConversationRelay is a Twilio feature that lets you integrate speech-to-text, text-to-speech, and LLMs directly into Twilio Voice, handling real-time audio streaming and interruption so you can focus on app logic.
Can I use ElevenLabs voices in Twilio Voice? Yes. By setting ttsProvider="ElevenLabs" and providing an ElevenLabs voice string in your ConversationRelay TwiML, you can use ElevenLabs voices on Twilio phone calls.
How do I pick an ElevenLabs voice for Twilio? Choose a voice in the ElevenLabs UI, copy its voice ID, select a model (e.g. flash_v2_5 or turbo_v2_5) and tune parameters like speed, stability, and similarity. Combine them into one voice string and paste it into your TwiML.
Does ElevenLabs TTS work in real time with ConversationRelay? Yes. ConversationRelay streams caller audio, sends text to your LLM, then uses ElevenLabs to read the response back with low latency, keeping the whole loop in sync.
Chapters: 00:00 Intro 00:39 Setting up our application 01:16 Exposing our local server with NGROK 01:31 Updating .env 02:04 Choosing an ElevenLabs voice 02:32 Customizing your ElevenLabs voice 03:22 Updating our app to use an ElevenLabs voice 04:02 Connecting our Twilio phone number 04:47 How ConversationRelay works behind the scenes 05:12 Outro and Next Steps
#twilio #elevenlabs #conversationrelay #twiliovoice #texttospeech #aiagent #voicebot #openai #nodejs #websockets #ivr #aiassistantHow to Play an MP3 on a Twilio Voice Call with .NET (Step‑by‑Step Tutorial)TwilioDevs2025-12-18 | Send a fun, pre‑recorded greeting or musical message with a real MP3 file—not text‑to‑speech—using Twilio Voice and .NET.
In this step‑by‑step tutorial, you’ll learn how to attach an MP3 to an automated outbound phone call so your friends, family, or customers hear a custom audio message when they pick up.
In this video, you’ll learn how to: - Set up a Twilio account and purchase a voice‑enabled phone number - Upload your MP3 file to Twilio Assets and get a public URL - Create a new .NET 9 console app and install the Twilio .NET SDK - Securely store your Account SID and Auth Token with .NET user‑secrets - Use Twilio Voice to place an automated call and play your MP3 using TwiML Play - Test the call to your own smartphone
What you need (prerequisites): - A free or paid Twilio account - An operating system that supports .NET (Windows, macOS, or Linux) - .NET 9 SDK installed - A code editor or IDE (VS Code, Visual Studio, Rider, etc.) - An MP3 audio file - A smartphone with active cellular service
FAQs: Q: How do I attach an MP3 to an automated Twilio voice call in .NET? A: Upload your MP3 to Twilio Assets (or another public host), copy the file URL, then use the Twilio .NET SDK to create a call with TwiML that contains a Play action pointing to your MP3 URL.
Q: Can I use this to send pre‑recorded messages to customers? A: Yes. Once your code is set up, you can call any verified phone number and play a pre‑recorded MP3 message, making it easy to send announcements, alerts, or seasonal greetings at scale.
Ready to build your first musical message with Twilio and .NET? Watch the tutorial, grab the sample code, and start sending MP3‑powered voice calls today.
Chapters: 00:00 Intro 00:14 Prerequisites 00:41 Phone Numbers in Twilio Console 01:11 Account SID and Auth Token 01:30 Uploading MP3 to Assets 02:05 Writing the Application 02:34 Adding the Twilio CLI 02:47 Setting Environment Variables 03:04 Updating Program.cs 03:55 Running the ApplicationDont roll your own one-time passcodes (OTP), use Twilio Verify!TwilioDevs2025-12-18 | Send secure OTP codes without rolling your own SMS system. Twilio Verify handles delivery, compliance, and short codes so you can add verification with a simple API call.
Twilio Verify: - Sends OTPs over trusted channels with built‑in fallback - Manages regulatory and compliance requirements for you - Handles the heavy lifting so you can focus on your app - Try Twilio Verify in your app and stop maintaining DIY auth infrastructure.
#Twilio #TwilioVerify #OTP #2FA #MFA #SMS #Authentication #SecurityGather insights and more from your Twilio calls with Conversational IntelligenceTwilioDevs2025-12-17 | Turn every customer conversation—calls, chats, and meetings—into searchable, actionable insights with Twilio Conversational Intelligence, an AI-powered transcription and conversation analytics solution.
Twilio Conversational Intelligence helps you: - Use AI call transcription and natural language analysis to capture every word - Extract customer insights and trends from support calls and sales conversations - Coach agents better and improve contact center quality assurance (QA) - Detect sentiment, topics, and intent to enhance the customer experience
Q: What is Twilio Conversational Intelligence? A: It’s an AI-powered tool that transcribes and analyzes customer conversations so you can understand what customers are saying, how agents are responding, and where to improve CX and performance.
Q: How can Twilio Conversational Intelligence help my support or sales team? A: It automatically turns calls and chats into structured data you can search, review, and act on—making it easier to coach agents, improve scripts, and optimize your contact center operations.
Twilio Conversational Intelligence: hear more, know more, do more. 💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevs
#Twilio #ConversationalIntelligence #AI #AITranscription #CallAnalytics #ContactCenter #CallCenter #CustomerExperience #CX #CustomerSupport #SalesCallsMake video calls a breeze with Twilio Videos simple API #VideoCalls #InAppVideoTwilioDevs2025-12-16 | Add secure, high‑quality video rooms to your app with Twilio Video. Use powerful APIs and SDKs to quickly build in‑app video calls without managing complex WebRTC infrastructure yourself.
With Twilio Video you can: - Create group rooms and peer‑to‑peer rooms - Record video sessions for later playback or compliance - Enable screen sharing, audio, video, and data tracks with a single API - Embed reliable video calling into web and mobile apps
Q: What is Twilio Video? A: Twilio Video is a programmable video API and SDK that lets you add real‑time video chat, group rooms, and screen sharing directly into your applications.
Q: How do I add video calls to my app with Twilio Video? A: Use the Twilio Video SDKs (Web, iOS, Android, etc.) and Video API to create and join rooms, manage participants, and control features like recording and screen sharing.
Build video experiences where your customers already are—inside your product. 💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevs
#Twilio #TwilioVideo #VideoAPI #VideoSDK #WebRTC #VideoChat #VideoCalls #InAppVideo #DeveloperToolsTwilio hosts your code and assets with Twilio FunctionsTwilioDevs2025-12-15 | Stop managing servers just to run your Twilio apps. Twilio Functions and Assets let you build event‑driven Twilio applications with serverless Node.js—no infrastructure required.
With Twilio Functions you can: - Run custom Node.js for any Twilio event (voice, messaging, etc.) - Upload and serve static assets like audio files and images in one place - Deploy secure, scalable Twilio workflows without provisioning servers
What is Twilio Functions? A serverless environment for running Twilio‑powered logic so you can code less and build more with simple, event‑driven Functions and built‑in asset hosting.
#Twilio #TwilioFunctions #Serverless #NodeJS #TwilioAssets #CloudFunctions #APIs #DeveloperToolsSend email in a few lines of code with Twilio SendGridTwilioDevs2025-12-11 | Deliver emails reliably at scale with the SendGrid Email API. With SendGrid’s REST API, it only takes a few lines of code to send transactional and marketing emails, then track engagement, delivery, and spam rates to keep your program healthy.
Start coding with SendGrid and turn your email data into real insight.
#SendGrid #EmailAPI #RESTAPI #EmailMarketing #TransactionalEmail #DeveloperTools #EmailDeliverabilityTwimlBins are perfect for simple Twilio appsTwilioDevs2025-12-10 | Handle calls and texts without spinning up a server using TwiML Bins. Host static TwiML directly in Twilio for simple IVRs, auto replies, and quick call flows you can deploy in seconds.
#Twilio #TwiML #TwiMLBins #IVR #SMS #AutoReply #CallFlows #DeveloperToolsDont fish for your phone lines, just use Twilio!TwilioDevs2025-12-05 | Stop “fishing” for more phone lines just to talk to your customers. With Twilio, you can instantly buy programmable phone numbers and start calling or texting right from your app.
Get new numbers fast, scale on demand, and connect with customers anywhere—no extra hardware required.
#Twilio #PhoneNumber #BusinessPhone #SMS #VoiceAPI #CustomerCommunicationConversationRelay makes building AI-powered voice apps easyTwilioDevs2025-12-04 | Build AI‑powered voice apps without managing your own speech pipelines. ConversationRelay combines best‑in‑class speech‑to‑text and text‑to‑speech so you can focus on your app logic, not low‑level audio infrastructure.
Spin up natural, real‑time voice experiences by connecting to a WebSocket server, then let ConversationRelay handle the rest—more natural conversations, smoother interactions, and AI that actually wows your customers.
#ConversationRelay #AI #VoiceAI #SpeechToText #TextToSpeech #WebSockets #DeveloperTools #VoiceAppsOne-time passcodes are easiest with Twilio VerifyTwilioDevs2025-12-03 | Deliver one‑time passcodes the easy way with Twilio Verify. Send OTPs over SMS, voice, email, or WhatsApp, and let adaptive routing optimize delivery so customers receive their codes fast, on the channel they prefer. Protect accounts from fraud and reduce risk from stolen data with a verification service built for security and scale.
#Twilio #TwilioVerify #OTP #OneTimePasscode #2FA #MFA #AccountSecurity #FraudPreventionBuild trust and beat fraud with smarter verification - Twilio Liftoff Verify & LookupTwilioDevs2025-12-02 | User verification gets tricky as your app grows and gains users around the world. In this video, we break down the real challenges of scaling your authentication flows, from messaging delays to global compliance and fraud threats. Learn how Twilio Verify and Lookup can save you time, reduce user frustration, and keep your growing community safe—no matter where they are.
Key Topics 🔑 Solving OTP delivery issues for global users 🌍 Scaling authentication flows across countries 🛡️ Blocking SMS fraud with Twilio Verify & Fraud Guard 🔎 Using Twilio Lookup for better onboarding and security
Chapters: 0:00 Intro 0:31 Problems with scaling custom verification 1:15 OTP delays and global messaging challenges 2:01 Twilio Verify: global coverage and Fraud Guard 3:42 Using Twilio Lookup to prevent fraud 4:44 Proactive onboarding with Lookup packagesImprove app security with Twilio Verify & Lookup - Twilio LiftoffTwilioDevs2025-12-02 | Want to make your app more secure and personalized? In this video, you'll learn how to use Twilio’s powerful platform and its Verify and Lookup APIs to build better user authentication and identity workflows. We'll show you the simple steps for setting up secure, personalized communications your users can trust.
Key Topics 🔐 Setting up user authentication with Twilio 📱 Personalizing app communications 🛠️ Using Verify and Lookup APIs 💡 Tips for secure workflows
Chapters: 0:00 Intro 0:11 What you can build with Twilio 0:28 Beyond connecting: personalization and identity 0:37 Using Verify and Lookup APIs 0:53 Prerequisites for the tutorial 1:19 What you'll need to follow along 1:32 Setting up your environment 1:46 Let's get started with Twilio Lookup and VerifyNext steps for making authentication seamless for your users - Twilio Liftoff Verify & LookupTwilioDevs2025-12-02 | Learn how to supercharge your user verification process with frictionless authentication methods. In this video, you’ll see how you can offer secure, user-friendly verification with multiple channels—ensuring your users always have access, no matter their situation. Flexible options like passkeys, TOTP, push approvals, and dynamic channel selection can dramatically improve user experience and security.
Key Topics 🔒 Frictionless multi-channel authentication 📲 Programmable verification with Twilio Verify 🛡️ Enhancing user security and experience ✈️ Real-world flexibility for verification scenarios
Chapters: 0:00 Intro 0:09 Authentication channels overview 0:22 Programmable verification with Twilio 0:29 Enhancing user experience 0:34 Formatting phone input fields 0:46 Multi-channel fallback for verification 0:54 Delivering critical messages via the right channel 1:02 Going further with frictionless authentication 1:16 Thank you and next stepsBetter user onboarding with Twilio Verify & Lookup - Twilio LiftoffTwilioDevs2025-12-02 | Want to secure your users with fast, reliable authentication? This short video demystifies Twilio Verify and Lookup, explaining how these tools can safeguard accounts with modern security methods. Learn how to choose the best verification channels for your users and add advanced authentication easily to your app.
Key Topics 🔑 How Twilio Verify authenticates users 📱 Using different channels for verification codes 🕵️♂️ Gaining insights about users with Twilio Lookup ⚡ Building scalable, secure authentication flows
Chapters: 0:00 Intro 0:04 What Twilio Verify does 0:22 Personalized auth methods with Verify 0:46 What Twilio Lookup provides 1:09 Secure authentication via API 1:23 Why not just send OTP via SMS? 1:49 Scaling authentication with Twilio 2:02 Seamless notification deliveryWhy managing access is key to security - Twilio Liftoff Lookup and VerifyTwilioDevs2025-12-02 | Ever wonder how user authentication and identity really work? In this video, we break down these essential security concepts using a simple locker analogy that makes it easy to understand. Learn why it’s not just about strong locks, but about how you manage keys—and see why getting authentication right matters for your business. Plus, discover how Twilio can handle the tough parts so you can focus on building your app.
Key Topics 🔑 User authentication vs. identity explained 🎒 Locker analogy for access management 🧑💻 Why security is more than strong passwords 📈 Making authentication seamless with Twilio
Chapters: 0:00 Intro 0:06 User authentication and the locker analogy 0:36 When you share access: security risks explained 1:15 Why access management matters 1:31 Growing securely with seamless authentication 1:49 How Twilio handles authentication for youHow to validate phone numbers and users - Twilio Liftoff Verify & LookupTwilioDevs2025-12-02 | Curious how airlines (or any global business) can keep user signups secure and smooth? In this video, we walk through validating phone numbers from around the world and verifying user identities using simple code and Twilio’s powerful APIs. You'll see how to avoid fake accounts, personalize messages, and ensure your communications always reach real people.
Key Topics 📲 Formatting and validating global phone numbers 🔎 Using Twilio Lookup for real customer insights ✅ Verifying user identities and detecting fake signups 💬 Sending verification codes by SMS, email, and more
Chapters: 0:00 Intro 0:32 Why validate phone numbers? 1:10 How Twilio Lookup uncovers real user info 1:54 Enhancing Lookup with data packages 3:31 Using identity match for global verification 5:13 Setting up Twilio Verify for secure onboarding 6:48 Sending and checking verification codesThe essentials of user authentication and identity - Twilio Liftoff Verify & LookupTwilioDevs2025-12-02 | In this video, Bianca breaks down the essentials of user authentication and identity, explaining why securing your app and building user trust is more important than ever. Whether you're running a booming business or preparing for launch, you'll get a practical intro to core concepts, real-world challenges, and the tools that make authentication seamless. Get ready to learn how Twilio can help you onboard and protect users, prevent fraud, and scale confidently.
Key Topics 🔐 What is user authentication and identity? 🛡️ Why trust is crucial for your business ⚙️ Best practices for secure onboarding 🔎 Using Twilio Lookup and Verify tools
Chapters: 0:00 Intro 0:18 What user authentication and identity mean 0:28 Why trust matters in your business 0:49 The risks of poor authentication 1:05 Building trust with the right tools 1:16 Engineering secure user experiences 1:36 How Twilio Lookup and Verify helpBoost security without hurting user experience - Twilio Liftoff Verify & LookupTwilioDevs2025-12-02 | Learn how to make your customer onboarding easy and secure without driving users away. This video breaks down common authentication pitfalls, explains how to spot fraud, and shows you how to create a smooth experience that protects both your business and your users. Perfect for anyone looking to improve onboarding, reduce support costs, and boost conversion rates.
Key Topics 🔒 Balancing security and user experience 🛡️ Detecting and preventing onboarding fraud 📲 Streamlining authentication and verification ⚡ Handling high-value transactions safely
Chapters: 0:00 Intro 0:29 Why seamless authentication matters 1:09 Real-world onboarding challenges 1:58 Detecting risk and fraud signals 2:53 Adapting flows for low and high-risk users 3:41 How frictionless auth protects your business 3:51 Next steps: start building authenticationTwilio Trust Hub simplifies complianceTwilioDevs2025-12-02 | Simplify messaging and voice compliance with Twilio Trust Hub. Trust Hub stores your core customer identity as a compliance customer profile, helping you manage A2P 10DLC registration, SHAKEN/STIR for voice, and CNAM, all in one place. One centralized hub to keep your compliance aligned across channels.
#Twilio #TrustHub #A2P10DLC #SHAKENSTIR #CNAM #Compliance #Messaging #VoiceBoost your email deliverability with SendGrid - Twilio Liftoff EmailTwilioDevs2025-12-01 | Curious how to improve your email marketing results? In this video, you'll learn how to set up SendGrid's Email API for effective email delivery, use dynamic templates for easy personalization, and track engagement in real time with actionable analytics. Whether you're new to SendGrid or looking to level up your campaigns, these best practices will help you connect with your audience and boost deliverability.
Key Topics 📧 Setting up your SendGrid account and onboarding 🛠️ Building and customizing dynamic email templates 📈 Tracking email performance and recipient engagement 🔄 Using webhooks for real-time analytics and reply handling
Chapters: 0:00 Intro 0:24 What is an email reputation score? 1:20 Understanding SendGrid's Engagement Quality API 2:10 Onboarding and pre-sending checklist 3:14 Dynamic email templates and personalization 4:57 Tracking email delivery and engagement 6:11 Real-time analytics and receiving replies 7:19 Building your email marketing foundation 7:51 Next steps: writing your first codeAvoid email deliverability fails: Transactional vs Marketing - Twilio Liftoff EmailTwilioDevs2025-12-01 | Curious about the difference between transactional and marketing emails? This video breaks it down in plain English and explains why the distinction matters for your email deliverability and sender reputation. Plus, you'll get practical tips for personalizing emails at scale, so your messages actually get noticed!
Key Topics ✉️ Transactional vs marketing emails explained 🔑 Why sender reputation matters 🛡️ Using separate IPs for deliverability 🎯 Personalization and dynamic content with templates
Chapters: 0:00 Intro 0:13 Why email type matters for sender reputation 0:31 How mailbox providers handle marketing emails 1:22 What is a transactional email? 2:19 Identifying marketing emails and calls to action 3:34 Personalization and using email templates 4:45 Passing arguments for dynamic contentImprove email marketing with actionable insights - Twilio Liftoff EmailTwilioDevs2025-12-01 | In this Liftoff course, we break down how you can use email data to fuel smarter campaigns and connect better with your customers. We hope you've enjoyed this Liftoff and look forward to seeing what you build!
Key Topics 📊 Using email data to learn customer preferences 💡 Improving open and click-through rates 📬 Boosting your email reputation score 📝 Adapting email content and design
Chapters: 0:00 Intro 0:05 Learning from email data and customer feedback 0:20 Adapting email content for better results 0:29 The power of engagement and reputation score 0:43 Why inbox real estate matters 0:56 Getting started with SendGrid and best practicesLearn how to send emails with Twilio SendGrid - Twilio Liftoff EmailTwilioDevs2025-12-01 | Get ready to unlock the secrets of seamless email delivery with Twilio SendGrid's Email API! In this video, Bianca walks you through the world behind your inbox and explains how you can easily send marketing and transactional emails at scale. You'll learn how the Email API powers timely notifications, helps you personalize your messages, and ensures crucial communications reach your users every time.
Key Topics ✈️ How email delivery works behind the scenes ⚡ Sending mass emails instantly with API 📊 Monitoring deliverability & leveraging email data 🔧 Personalizing communications for users
Chapters: 0:00 Intro 0:26 Why email is more than your inbox 1:22 What is the SendGrid Email API? 2:01 Sending urgent emails at scale 2:44 How the Email API works for businesses 3:41 Developer superpowers: monitoring, personalization, and data 4:22 What you'll learn in this tutorialHow to track email performance with SendGrid - Twilio Liftoff EmailTwilioDevs2025-12-01 | Curious about how your emails are performing? In this video, we break down how Owl Air tracks and improves email campaigns using SendGrid's powerful analytics tools. Learn to segment audiences, monitor engagement, and optimize your email strategy with simple tracking features.
Key Topics 📬 Segmenting and targeting email audiences 📊 Tracking opens, clicks, and engagement 🔗 Using SendGrid's event webhooks 🛠️ Email activity reports and subscription tracking
Chapters: 0:00 Intro 0:03 Organizing and segmenting email lists 0:28 The power of personalized emails 0:37 Are our email campaigns working? 0:49 Tracking opens and clicks with SendGrid 1:12 Using pixel and subscription tracking 1:28 Email activity reports 1:39 Getting data with event webhooks 2:10 Optimizing your email campaignsHow to Send Your First Email with Twilio SendGrid - Twilio LiftoffTwilioDevs2025-12-01 | Ready to send your first email using SendGrid? This video walks you through everything you need, from domain authentication to firing off your first API-powered message. Whether you're brand new to transactional email or just want a fast demo, we've got you covered with step-by-step guidance and pro tips for smooth sending.
Key Topics ✉️ Setting up SendGrid and required tools 🔒 Domain authentication and DNS records explained ✅ How to send a test email using curl and the SendGrid API ⚙️ API key best practices and code walkthrough
Chapters: 0:00 Intro 0:06 Tools you need for the demo 0:29 Why domain authentication matters 1:11 DNS records overview (SPF, DKIM, DMARC) 2:58 Walkthrough: Authenticate your domain in SendGrid 3:53 Sending your first test email with curl 4:45 Walkthrough of the email payload and personalization 5:32 Run the code and check inboxAnyone can build IVRs and chatbots now (even non-programmers) #NoCode #Tutorial #TwilioTwilioDevs2025-11-26 | Design communication workflows without writing endless lines of code. Twilio Studio lets you visually build IVRs, chatbots, and customer journeys so you can launch common workflows without needing to be a programmer.
Build smarter conversations faster with a drag‑and‑drop editor that connects voice, SMS, chat, and more—all in one place.
#Twilio #TwilioStudio #NoCode #LowCode #IVR #Chatbots #CustomerExperience #AutomationCreate interactive voice menus without coding - Twilio Liftoff VoiceTwilioDevs2025-11-25 | Ready to make your Twilio app do more than just say "hello world"? This video shows you how to create a dynamic, no-code IVR menu using Twilio Studio. You'll learn how to guide callers through options, send texts, connect to support, and even record calls, all with an easy drag-and-drop interface. Whether you're starting from scratch or using templates, we'll walk through each step to make your customer communications smarter and smoother.
Key Topics 🎛️ Using Twilio Studio's drag-and-drop builder 📞 Setting up IVR flows with multiple options 👂 Call recording and compliance basics 💬 Sending SMS and voice confirmations 🧑💻 Testing with Twilio Dev Phone
Chapters: 0:00 Intro 0:17 What is Twilio Studio? 0:43 Drag-and-drop flow building explained 1:50 Example: IVR for Owl Air 2:32 Setting up triggers and widgets 5:15 Greet and Gather: Greeting callers and options 6:53 Adding call recording with compliance notice 8:09 Building SMS, voice, and support path widgets 9:35 Routing logic based on caller input 11:15 Testing with Twilio Dev PhonePutting it all together - Twilio Liftoff VoiceTwilioDevs2025-11-25 | See how you can supercharge your contact center by combining Twilio Flex and Twilio Voice Intelligence. This video walks through transforming call data into personalized service, making calls searchable, and extracting actionable insights from your customer interactions. If you're building or managing a contact center, you'll want to check this out for practical ideas you can start using today.
Key Topics 📞 Using Twilio Flex to manage and personalize customer calls 🔍 Making call recordings searchable with Voice Intelligence 📊 Running sentiment analysis with Voice Insights 🛠️ Building modular, programmable contact centers
Chapters: 0:00 Intro 0:03 Twilio for voice app developers 0:17 Evolving to a service center 0:31 Introducing Twilio Flex 0:51 Personalizing calls with real-time data 1:15 Flex’s modular, programmable features 1:28 Discovering customer insights with Voice Intelligence 1:40 Sentiment analysis with Voice Insights 1:59 Real business impact and next steps 2:08 Build your own solutions with Twilio APIs 2:25 Thanks and wrap upBuild your first Twilio Programmable Voice app - Twilio Liftoff VoiceTwilioDevs2025-11-25 | Ready to bring Programmable Voice into your apps? In this video, you'll learn how to set up a Twilio phone number to receive calls, respond with a custom greeting, and even forward calls programmatically. We walk you through webhooks, TwiML basics, securing your functions, and making outbound calls—all step by step. Whether you're brand new to Twilio or leveling up your call flow, this tutorial will help you get started fast.
Key Topics 📞 Handling inbound calls with Twilio webhooks 💬 Responding with TwiML and custom messages 🔒 Securing your Twilio Functions 🔄 Forwarding and making outbound calls
Learn More: [Twilio Voice Quickstart Guide] [Securing Twilio Functions] [Twilio Phone Number Registration Guidelines] [Webhooks and TwiML Overview]
Chapters: 0:00 Intro 0:05 Setting up your first call flow 0:45 What are webhooks and TwiML? 1:26 Toolbox: accounts and phone numbers 2:07 Writing the greeting function 2:31 Best practices for function security 3:00 Linking your function to your Twilio number 3:56 Call forwarding with Functions 4:48 Making outbound calls programmatically 5:57 Wrapping upLearn how to make and receive calls in Twilio Liftoff Voice!TwilioDevs2025-11-25 | Curious how to build powerful voice applications? In this intro to the Twilio Programmable Voice API, Bianca walks you through how to make and receive calls, greet users, route calls intelligently, and more. Whether you're coding your first call or ready to explore advanced voice features, you'll discover how to bring your ideas to life with Twilio.
Key Topics 📞 How the Twilio Voice API works 🛠️ Building and customizing voice apps 🔊 Twilio features: greetings, IVR, call routing 🌐 Using Twilio SDKs and WebRTC
Chapters: 0:00 Intro 0:06 What is Twilio Programmable Voice API? 0:28 Simple and advanced voice app examples 0:44 Why use Twilio and coding flexibility 1:03 Liftoff series overview and who it's for 1:23 All about the Voice API 1:55 What you'll learn in this tutorial 2:10 Key features: TwiML, audio, IVR, SDKs 2:29 Advanced topics and getting startedMake calls work for your app with Twilio - Twilio Liftoff VoiceTwilioDevs2025-11-25 | Ever wondered how apps let you call a delivery driver without sharing phone numbers or how you can call your airline through an app? This video breaks down how Twilio Programmable Voice API powers secure, seamless phone calls — all controlled by your code. Get an introduction to the tech under the hood and see how easy it is to create custom voice experiences for your users.
Key Topics 📱 How Twilio Voice enables secure calls 🔒 Protecting user privacy in phone communications 🛠️ How developers control calls with code 🎵 Customizing call experiences (like playing a song)
Chapters: 0:00 Intro 0:35 Real-life examples of Twilio Voice 1:07 How Twilio protects caller privacy 1:43 Why developers use the Voice API 2:00 How Twilio Voice call flow works 2:36 Demo scenario: playing a song with your code 2:54 Controlling calls and available options 3:05 Next steps and what you'll learnSend SMS, MMS, WhatsApp, and RCS messages with TwilioTwilioDevs2025-11-25 | Send SMS, MMS, WhatsApp, and RCS messages through a single Twilio Messaging API. Use messaging services and sender pools to manage senders, sticky sender, and geographic routing—all without juggling multiple providers.
Want to try it yourself? Sign up for Twilio and start sending messages in minutes.
#Twilio #MessagingAPI #SMS #MMS #WhatsApp #RCS #CPaaS #DeveloperToolsJoin the CodeTV + Twilio Hotline Challenge! Details in description.TwilioDevs2025-11-10 | Got a hotline idea? Time to make it real ☎️💡
Join the Hotline Challenge - build it with ConversationRelay or drop your best hotline idea in the comments to win @Twilio swag + credits! bit.ly/3Xnjwti
Alex Goldman will build the best ideas live and announce winners in December! 😉
💻 Sign up for a Twilio account here: twil.io/trytwilio-yt 👉 Subscribe for more Twilio updates: twil.io/sub-twiliodevsWhat to build next with Twilio - Twilio Liftoff MessagingTwilioDevs2025-11-05 | Congrats on making it through the fundamentals of Twilio Messaging in this Liftoff!
Celebrate your achievements and get inspired for the next stage of your Twilio journey.
Key Topics: 🚀 Celebrating your Twilio messaging app launch 🔗 Next features: link shortening and scheduling 🛡️ Upgrading security with SMS fraud protection
Chapters: 0:00 Intro and celebrating your liftoff 0:13 What to build next: new feature ideas 0:28 Boosting your app: link shortening & fraud protection 0:38 Future projects: message scheduling 0:47 Reflecting on your Twilio journeyTroubleshoot your messaging app like a pro - Twilio Liftoff MessagingTwilioDevs2025-11-05 | Ever wish you could monitor your messages with the same precision as air traffic control? In this video, discover how Twilio's Messaging API and dashboards empower you to track messages, troubleshoot issues, and analyze campaign performance with real-time insights. You'll learn practical ways to ensure every message reaches its destination, resolve problems fast, and keep your communication strategy flying high.
Chapters: 0:00 Intro 0:09 What happens when messages hit issues 0:17 Tracking message journey and status callback 0:43 Troubleshooting with Twilio tools 1:15 Real-time analytics with Messaging Insights 1:57 Delivery and error dashboards 2:20 Monitoring inbound responses 2:29 Keeping your campaigns on track