April 2025 Summaries

The Twilio Video AI Avatar Experience is a real-time photorealistic AI communication platform that combines large language models with digital avatars to create engaging and interactive experiences. It leverages technologies such as Twilio Video, HeyGen for avatars, Deepgram for speech-to-text capabilities, and OpenAI for intelligent processing. The application's architecture is designed to be event-driven, allowing for seamless flow of messages and multimedia content between the front-end and back-end. The platform demonstrates various use cases, including customer support, virtual events, and immersive digital experiences. To deploy the app, developers need to set up accounts with Twilio, Deepgram, OpenAI, and HeyGen, and then follow a step-by-step guide that includes setting up Docker, fly.io, and Next.js. The app can be containerized using Docker and deployed on fly.io for scalability and ease of management.

The FCC recently updated its rules regarding Voice Service Providers (VSPs) under the STIR/SHAKEN framework, which may affect Twilio customers handling outbound calls in the US. The new rules require businesses that originate calls on behalf of others or control phone numbers to obtain their own SPC token and STIR/SHAKEN certificate, sign their outbound calls, and assign attestation levels. Twilio recommends its customers consult legal counsel to determine if they qualify as a VSP under the new definition and what obligations that may entail. For affected customers, Twilio offers features such as Elastic SIP Trunking's PASSPorT Pass-Through feature and an upcoming Bring Your Own Token (BYOT) feature to support compliance with the updated rules.

Today, Twilio is launching a brand refresh and new campaign called "Be a Builder," which aims to strengthen its connection with customers and better navigate the opportunities ahead. The brand refresh is backed by extensive research that includes discussions with customers and focus groups to understand what they care about and align it with Twilio's own values. The brand evolution celebrates all the builders who are creating meaningful experiences, including developers, entrepreneurs, creators, and anyone shaping moments, businesses, and customer engagement. Twilio's new brand strategy is about reconnecting with its roots and expanding to embrace a builder mindset that provides freedom to create without constraints and fosters a community built around shared values. The company aims to inspire builders to create experiences that are amazing, recognizing the value of human ingenuity and connection in a world where AI is automating tasks at an unprecedented rate.

The Twilio Video AI Avatar Experience is a real-time, AI-powered photorealistic customer experience that combines Twilio Video with Deepgram, OpenAI, and HeyGen to deliver high-quality video streaming and interactive customer interactions. This experience enables businesses to create lifelike customer interactions by integrating the right providers for high-quality video streaming. The integration of these technologies allows for real-time transcription, accurate voice-to-text conversion, intelligent natural conversations, and photorealistic digital avatars that mirror human-like facial expressions and speech. This technology has the potential to revolutionize sales, marketing, and customer service by delivering personalized product demos, real-time guidance, and charismatic brand ambassadors. The Twilio Video AI Avatar Experience is a launchpad for a new era of interactive, efficient, and captivating customer engagement.

This tutorial teaches how to implement a magic link in CakePHP using Twilio. Magic links are an authentication method that allows users to log into applications or websites without passwords by providing their phone number or email address and receiving a unique, time-sensitive link via SMS or email. The tutorial covers setting up a new CakePHP project, retrieving Twilio access credentials, installing the Twilio PHP Helper Library, connecting to a database, creating the application controller, generating template files for the authentication controller's methods, updating the application's routing table, making the application accessible on the internet using Ngrok, and testing the application.

The SIGNAL 2025 event is a premier gathering for builders reimagining what's ahead in customer engagement, with over 100 sessions tailored to marketers and developers. The event features the Twilio Arcade, where attendees can play games that visualize real-time customer signals, as well as hands-on workshops and build-it-yourself labs. Industry leaders like Satya Nadella will share their insights on modernizing customer engagement through AI use cases, while companies like Spotify, Nextdoor, and Gen Z will showcase how they're redefining marketing. Attendees can also learn about building systems that save lives, step into the lab to see real-world tools and experiments, and hear about what's next in the industry. The event is a must-attend for builders who want to stay ahead of the curve.

Twilio has introduced a new podcast called Builders Wanted, which showcases the stories of leaders rethinking customer journeys, brand leaders reinventing their voice in crowded markets, and technologists leveraging AI to power smarter human experiences. The podcast aims to inspire builders who are trying to create better things. Twilio's Chief Marketing Officer Chris Koehler and VP of Brand & Creative Adam Morgan discuss the strategy behind the company's new brand transformation, which is focused on a builder mindset that transcends job titles. The rebranding was driven by questions about what customers value, how the audience has evolved, and where Twilio falls short in its story. The team aimed to create a brand that speaks to the full stack of developers, engineers, and executives who build customer strategies. Each episode features real conversations with people building real things, exploring strategy, tactics, and tradeoffs behind bold decisions.

The Twilio update discusses the latest developments in the Twilio ecosystem, including enhancements to Compliance Reports and weekly Deliverability Score Emails. The Content Template Builder is a powerful tool that helps create consistent, engaging rich messaging across multiple channels, simplifying message creation and compliance while maintaining future-proof communications. Alex, a Developer Evangelist at Twilio, co-hosts AB Testing and the $ twilio update show on Twitch and YouTube, sharing his experience and expertise to help startups build amazing customer experiences. The post also mentions related resources such as Twilio Docs, Resource Center, Ahoy, and provides links to various tools and tutorials for developers.

This guide demonstrates how to build a call scheduling service using Twilio Programmable Voice and the NestJS framework. The application is built with a modular architecture, consisting of Controllers, Services, and Modules, which supports scalability, maintainability, and microservices readiness. The project uses the Nest CLI to scaffold the application and integrates Twilio APIs for scheduling voice calls while ensuring quality through unit tests. The application also includes a reminders resource to handle scheduling logic, which is implemented using cron jobs and the SchedulerRegistry. The guide covers key aspects of building the service, including integrating Twilio, creating unit tests, implementing services, and testing the application.

This tutorial provides a comprehensive guide on building a real-time SMS status tracking and logging system using Go and Twilio. The application allows users to track the lifecycle of an SMS message in real-time, including queued, sent, delivered, or undelivered status updates. The system uses Twilio's Programmable Messaging API to send and receive SMS messages, with the ability to log each event in a CSV file for further processing. The Go application is built using the go mod init command, installing dependencies such as Twilio's official Go Helper Library, GoDotEnv, and GoCSV. The application exposes its local server to the public internet using ngrok, allowing users to configure the webhook in their Twilio dashboard. The system also includes features for sending SMS messages, viewing logged status updates, and logging each event in a CSV file. With this tutorial, developers can build a robust and efficient SMS tracking system that captures incoming messages and status updates, logs them cleanly, and displays them in real-time through a web interface.

This tutorial outlines a streamlined process to create a voice-based OTP system using Twilio's powerful voice API alongside Go, providing developers with a robust, accessible, and secure verification method. To follow along, developers need to have Go 1.23 or higher, access to a MySQL database, and a free or paid Twilio account with an active phone number. The tutorial guides developers through creating environment variables for storing Twilio credentials, installing the necessary packages, creating a database schema, implementing authentication logic, and styling the application pages. By following this guide, developers can build a voice authentication system that enhances security without compromising user experience, making it suitable for real-world applications.

One Acre Fund is a social enterprise that serves over 5 million smallholder farmers across sub-Saharan Africa by providing access to quality farming supplies, training, and financing. The organization has partnered with Twilio.org to leverage technology, which supports the development of digital tools that complement farmers' traditional knowledge, deliver timely farming information to reach more farmers quickly, and open up new opportunities for convenience and sustainable growth. These initiatives include Optimized Agronomy Tools, Remote Sensing + Insurance Innovation, Agricultural Extension Agents, Digital Weather Advisory Services (DWAS), and the Tupande Mobile App. DWAS delivers critical planning information via SMS, while the Tupande app enables customers to browse, order, and pay for farm supplies from local One Acre Fund shops, supporting farmers in improving their harvests, building resilience, and boosting their livelihoods in a changing climate.

This tutorial aims to help developers build a real-time voice AI assistant using Twilio's ConversationRelay and LiteLLM, allowing for quick integration with multiple large language model (LLM) providers. The setup features real-time streaming responses via a WebSocket server, multi-provider LLM support, smoother voice interactions, and straightforward Twilio Voice integration through ConversationRelay. To get started, developers need to have Python 3.8+, API keys for the chosen LLM provider, ngrok for exposing the test server to Twilio, a Twilio account and registered phone number, and follow specific installation steps to configure the server and connect it with Twilio Voice using ConversationRelay.

This tutorial guides developers on how to integrate ConversationRelay from Twilio with OpenAI's Large Language Model for building real-time, human-friendly voice applications. The integration aims to improve latency and provide a fluid interaction by using token streaming, which allows the speech to start before the AI finishes generating a response. To achieve this, additional code is added to track the conversation and handle interruptions more elegantly, allowing the AI to have context for where the interruption occurred. The tutorial also covers prerequisites, such as setting up Node.js, Twilio phone numbers, and OpenAI accounts, and provides step-by-step instructions on how to test the application. By following this tutorial, developers can create a more robust voice conversation with AI that is better equipped to handle interruptions and provide a seamless user experience.

You can create a serverless SMS responder using Python and Google Cloud Functions. To do this, you'll need a Twilio account, a Google Cloud account, Python 3.9+, the Google Cloud CLI, and a code editor. You'll use Twilio's Webhook system to receive incoming messages and respond with a random programming joke using Python and the twiML (Twilio Markup Language) format. You can deploy your function to Google Cloud using the gcloud CLI or the Google Cloud Console. Once deployed, you can configure Twilio to send a message to your number and test it by sending a text message back to yourself. The serverless SMS responder is a powerful tool for building scalable communication solutions and can be used as a starting point for more complex messaging applications.

Testing and Benchmarking in Go`: This article provides a comprehensive guide on testing and benchmarking in Golang, covering the importance of these practices, how to write unit tests, table-driven tests, and benchmarks, as well as profiling and performance optimization techniques. The article also introduces popular testing libraries such as Testify, GoMock, Ginkgo, GoCheck, and Gomega. It emphasizes the benefits of using third-party libraries to enhance the testing experience in Go. With this guide, developers can ensure their code is both correct and efficient, maintaining high-quality applications and continuously improving and optimizing their code.

Behind the Builder is an editorial series that shines a spotlight on employees building things behind the scenes at Twilio — exploring their backgrounds, the projects they’re working on, and what life at Twilio means to them. Khushbu Shaikh, Technical Account Lead, shares her career journey from handling tech support at Bosch to leading impactful technical projects at Twilio, highlighting growth, learning, and seizing opportunities. She talks about the projects she's working on, how Twilio has shaped her career, and personal milestones along the way. The series aims to humanize the company's inner workings by showcasing employees' experiences.

The discussion at Enterprise Connect centered around the challenges of effectively managing and leveraging dispersed data stores to improve customer experience. The panel emphasized that businesses should focus on creating a dynamic customer experience data layer that connects insights from all touchpoints into a unified profile, rather than pursuing a single "single source of truth." This approach ensures that different departments can access relevant customer information in the most meaningful context. Effective unified profiles must provide live signals from different systems, relevant transactional details, cross-channel communication history, and summaries, intent analysis, and sentiment data to create a continuous improvement cycle for more personalized experiences. The panel also discussed the need for new standards to govern AI-driven integrations, ensuring that AI agents act responsibly, securely, and within intended limits. Ultimately, businesses will likely require a network of interoperable AI agents with different specializations to handle various tasks, rather than relying on a single agent. Additionally, data security across disparate systems is crucial, as consumers expect businesses to honor their data privacy choices and notification preferences.

The Twilio update discusses the latest developments in the Twilio ecosystem, including the introduction of Model Context Protocol (MCP), an open standard that revolutionizes how AI agents access external tools and data. MCP replaces custom integrations with a standardized system for discovering and executing external tools, covering 1,400+ API endpoints across Twilio's communication endpoints. Additionally, ConversationRelay is now HIPAA eligible, and ElevenLabs integration has been added to the platform, offering a range of expressive voices. The update also highlights upcoming events, including webinars on using Segment with Twilio, and Alex, a Developer Evangelist at Twilio, shares his experience as a founder, robotic submarine builder, and Scuba Instructor.

In an insightful Q&A session, email deliverability consultant Ting Chin Ng discusses the intricate challenges and strategies associated with sending emails across the Asia-Pacific region, especially in countries like China and Australia. Ng highlights the specific limitations imposed by various inbox providers, such as daily and hourly sending limits, and the unique hurdles posed by China's "Great Firewall," which restricts the use of VPNs and requires data localization. Ng also emphasizes the importance of using local languages to enhance engagement and deliverability, particularly in regions where English proficiency is low, such as Japan and Korea. Additionally, Ng points out the heightened sensitivity of inbox providers like BigPond to spam complaints compared to global giants like Google and Yahoo. While third-party blocklists like Spamhaus and Proofpoint have an impact, some listings like UCE protect are less influential in the APAC domain. The discussion underscores the value of region-specific strategies and expert guidance to navigate the complex landscape of email deliverability effectively.

MCP (Model Context Protocol) is a protocol for AI agents to discover and use tools more flexibly, originally introduced by Anthropic. Recent interest in MCP has exploded, with Google Trends showing a sharp rise in searches following OpenAI's support announcement. A hands-on test using Twilio's MCP implementation found that MCP-enabled runs completed tasks ~20.5% faster on average, made 19.2% fewer API calls, and had slightly fewer user interactions. However, the use of MCP came with added cost, introducing overhead in cache reads and writes, which increased by ~28.5% and ~53.7%, respectively. The test also found that while MCP makes the agent smarter and faster at the cost of munching more tokens, there's reason to believe this cost burden will decrease over time. MCP is beneficial for generalist tasks but may not offer significant improvements for niche or proprietary scenarios. To make the most of MCP, developers should include only necessary API details and data, use tool filtering, monitor token usage, and experiment with models and settings.

Twilio Engage has unveiled a redesigned Journeys architecture to address the growing complexity of B2C and B2B use cases by offering precise, scalable, and context-rich personalization in real time without extensive engineering resources. The new features, now in public beta, include Event-Triggered Journeys, which leverage intent signals to manage transactions like shopping cart abandonment with personalized messaging, and contextual payloads that integrate data from multiple sources for a comprehensive customer profile. This architecture also enhances observability and usability, allowing businesses to visualize customer interactions with clear audit trails and activity paths. These capabilities aim to transform Engage into a robust data orchestration layer within the Twilio Segment customer data platform, enabling businesses to increase conversion rates through timely and relevant customer engagements.

Sending emails in Node.js with Twilio SendGrid Dynamic Templates allows developers to design and send professional and dynamic emails without manual HTML editing. This tutorial guides users through creating a dynamic template using the Design Editor, customizing it with Handlesbars templating language, and integrating it into a Node.js application. The process involves setting up a free SendGrid account, creating a dynamic template, designing it visually or with HTML, personalizing it with dynamic data, and sending it using the Twilio SendGrid API. By following this tutorial, developers can upgrade their marketing campaigns with more efficiency and scalability, and explore additional features such as email verification and contact list integration.

Laravel Passport is an OAuth 2.0 server implementation that simplifies API authentication in Laravel applications by enabling secure access to APIs through token-based authentication. To integrate it with social authentication providers, you need to use Laravel Socialite, which handles user authentication through social platforms such as Facebook, Google, and Discord. The integration combines the security of Passport's token-based authentication with the convenience of Socialite's social login features. To start, you'll scaffold a basic Laravel project, install the necessary packages, including Laravel Passport and Socialite, and configure the installed packages to work together seamlessly. You'll then modify the authentication flow by creating a controller that handles user login through social providers, adds routes for redirection and callback management, creates a React frontend with a social login component, and enables CORS configuration for communication between the frontend and backend. Finally, you can test the application, which should allow users to log in using their preferred social platforms while maintaining strict security standards. This integration simplifies user authentication while providing OAuth2-compliant token-based authentication, making it an important technique for securing modern web applications.

The Engagement Awards recognize organizations that are pushing the boundaries of customer engagement, data, and personalization using Twilio's technologies. This year's finalists have demonstrated exceptional use of Twilio's products to create meaningful, scalable customer experiences. The 2025 finalists include Best Buy, CLEAR, CUES, MoneyLion, Nextdoor, Rocket Mortgage, Tillster, United Network for Organ Sharing (UNOS), Vineyard Vines, and Zillow, all of which have adopted innovative uses of Twilio's products to transform their respective industries.

The Federal Communications Commission (FCC) has updated its rules for SMS opt-out keywords, which will take effect on April 11, 2025. Twilio, a company that provides SMS services, has announced that it will add two new keywords, "REVOKE" and "OPTOUT", to its default SMS Stop Filtering service starting May 14th. This means that if a consumer responds with one of these keywords, the message will not be blocked, but rather, Twilio will continue to send messages until the consumer explicitly revokes their consent using one of the new keywords. It is recommended that customers review the specific details of the rules and consult their own legal counsel to determine how this update may impact their business.

This AI agent for sending emails through WhatsApp voice notes using Twilio, Sendgrid, .NET integrates speech recognition and enhancement using AssemblyAI and OpenAI to convert voice messages into professional emails. The system uses a .NET framework to handle HTTP requests and controllers, with services such as transcription, content enhancement, and email sending integrated using Twilio's API, OpenAI's chat-based API, SendGrid for delivery, and AssemblyAI for speech-to-text conversion. The application is built using ASP.NET Core and follows the Minimal API approach, with Swagger integration for API documentation and CORS configuration for testing from different front-end clients. To test the application, ngrok is used to expose the local server to the internet, and Twilio's WhatsApp Webhook is configured to process incoming messages in real-time. The system can be applied to various use cases such as AI for the visually impaired, CRM business integration, automated response systems, and multi-language support.

In the context of the growing attention economy, email inboxes are becoming increasingly overwhelming, leading to the development of AI-driven features like automatic extraction used by Gmail and Yahoo to help users quickly identify key information such as discount codes and sale details. While this technology offers convenience to consumers, it poses challenges for email marketers, as it can adversely affect email previews and attribution by pulling content directly into inbox previews, potentially reducing the need for users to open emails. To counteract these effects, marketers can utilize tools like Gmail Annotations and Yahoo's Schema, which allow for greater control over how promotional emails are displayed, thereby enhancing user engagement and improving the likelihood of email openings. These annotations enable marketers to design strategic previews that align with their campaign goals, even as the technology of automatic extraction continues to evolve and become more prevalent in email management.

To add test coverage for the PHP SendGrid code using PHPUnit, you need to refactor the existing code. Start by setting up a small project with required dependencies, including PHPUnit and Composer. Then, create a new class `SendEmailHandler` that handles sending emails using SendGrid's API. Refactor this class to remove direct object instantiation and handle response errors gracefully. Finally, add tests for different scenarios, such as handling invalid request data and testing the class's functionality with PHPUnit. By following these steps, you can ensure your PHP code is reliable and maintainable.

This article explores how Twilio AI Assistants integrates with different communication channels such as voice and messaging channels like SMS, WhatsApp, and Twilio Flex Webchat. The integration patterns for these channels are discussed along with a step-by-step guide to configure the integrations using an open-source quickstart middleware. The middleware provides features like multilingual support, secure connections, and handover to live agents on Twilio Flex. The article also covers how to deploy the middleware using Twilio Functions and sets up the necessary prerequisites for integration.

Outlook will implement new sender requirements starting May 5, 2025, targeting domains that send over 5,000 emails daily, following similar measures by Google and Yahoo!. These requirements mandate compliance with SPF, DKIM, and DMARC authentication protocols to enhance email security and maintain trust in digital communications. Non-compliant emails will initially be sent to junk folders and may eventually be rejected. Outlook also recommends email hygiene practices such as maintaining a valid sender address, providing functional unsubscribe links, managing email bounces, and ensuring transparent mailing practices. These changes aim to protect inboxes and will involve blocking non-compliant emails, with Twilio SendGrid treating such instances as blocks rather than bounces. Senders are urged to ensure compliance with these protocols and recommendations to avoid disruptions in email delivery.

Fostering a data culture involves uniting marketing and data engineering teams to enhance organizational communication and efficiency. The text highlights the importance of integrating these disciplines to leverage data effectively, suggesting that collaboration can lead to improved strategies and outcomes. It also references various related posts and resources that offer insights into data activation, RCS on iPhone, and data collection methods, as well as providing access to API documentation, SDKs, and tutorials. Additionally, it points to a community hub where developers can find best practices, code samples, and inspiration for building communication and digital engagement experiences.

The Twilio Alpha MCP (Model Context Protocol) Server is a new open standard designed by Anthropic to improve how AI models access and interact with external information and tools. It aims to make AI agents more capable, scalable, and secure by decoupling the agent from the messy context management and custom tool integrations that developers currently juggle. The server works as a network of composable services that enables multi-step, cross-domain reasoning at scale, with less cognitive load for the developer and far less overhead. By using MCP, AI agents can query servers to discover available tools and capabilities, reason through tasks, and execute actions safely and consistently. The Twilio Alpha MCP Server is designed to improve productivity and user experience when working with AI agents by completing real-world tasks 20.6% faster on average, requiring 19.3% fewer API calls, and reducing human interaction slightly. However, it also increases costs per task due to caching activity. The Twilio team is currently working on authentication and cloud hosting for the MCP server, as well as improving tool discovery and filtering. Users can start experimenting with the Twilio Alpha MCP Server by running it locally and connecting it to a compatible client like Claude Desktop or Cursor.

Twilio emphasizes the importance of adopting a customer-centric approach in email marketing by encouraging senders to view their email programs from a subscriber's perspective. It highlights the critical stages of the email lifecycle, starting with a clear and engaging opt-in process that sets the right expectations through prompt and relevant welcome emails. As the relationship progresses, it's crucial to ensure the content remains personalized and aligned with the subscriber's interests rather than being generic or overly sales-focused. The frequency of emails should be carefully managed to prevent overwhelming subscribers, as excessive emails can lead to unsubscribes and spam complaints. Equally important is the opt-out process, which should be straightforward to avoid user frustration. By putting themselves in the subscriber's shoes, senders can effectively audit and improve their email programs, ensuring a more engaging and satisfying experience for the audience.