Industry vertical

Communications Platform as a Service (CPaaS)

Programmable communications sold as an API — SMS and messaging, programmable voice and telephony, verification, and the carrier connectivity underneath.

233 providers 4614 APIs 7 enterprise adopters

Communications Platform as a Service (CPaaS) on the APIs.io network indexes 233 providers publishing 4614 APIs across this industry vertical.

Notable providers include Twilio, Telnyx, Infobip, Customer.io, Brevo, Salesforce Marketing Cloud, and 227 more — each profile links out to that provider’s APIs, schemas, and governance artifacts.

Related industries: Telecommunications & Connectivity, Customer Support & Service, Marketing & Advertising, and Customer Relationship Management (CRM). Browse every industry vertical at industries.apis.io.

About this industry

Programmable communications sold as an API — SMS and messaging, programmable voice and telephony, verification, and the carrier connectivity underneath. Membership is computed from every provider in the catalog whose tags match this vertical — 233 at the last build — rather than from a fixed list. API Evangelist research additionally tracks 1 sub-sector within it: General.

Market demand

Providers above are the supply side. This is the demand side — enterprises adopting API & AI technology in this vertical, drawn from APIs.io Insights. Names and maturity are enterprise-scoped; they don't overlap with the provider catalog.

7enterprises adopting

#13 / 50adoption maturity rank

Statefulnessstrongest layer

Customization & Adaptationweakest layer

Leading adopters

Comcast154AT&T135Verizon91T-Mobile91Zoom90West Technology Group81Twilio37

AI & API adoption maturity

Mean adoption intensity across the enterprises above, by capability layer — how this vertical is maturing, from foundational models through governance and FinOps.

Statefulness

54.5

Foundational Layer

51.9

Economics & Sustainability

43.3

Efficiency & Specialization

38.6

Productivity

32.9

Retrieval & Grounding

32.3

Governance & Risk

31.9

Measurement & Accountability

28.5

Integration & Interoperability

21.2

Customization & Adaptation

10.4

Demand data: APIs.io Insights, enterprise API & AI adoption read from job postings. These figures predate the Q3 2026 read and are being rebuilt on it.

Providers (233)

Provider	Description	APIs	Rating
Twilio	Cloud communications platform providing APIs for SMS, voice, video, and authentication services. Twilio offers 30+ APIs covering messaging, voice, video, email, identity verific...	153	exemplar
Telnyx	Telnyx is a carrier-owned, private-IP cloud communications and AI infrastructure platform. Its REST API (api.telnyx.com/v2, ~1,400 operations) covers programmable voice and SIP ...	223	exemplar
Infobip	Infobip is a global communications platform as a service (CPaaS) provider headquartered in Vodnjan, Croatia, and is Croatia's largest technology company. It sells programmable m...	6	exemplar
Customer.io	Customer.io is a customer engagement platform that combines a customer data platform, marketing automation, and messaging delivery to send behavior-triggered email, push, SMS, a...	51	exemplar
Brevo	Brevo (formerly Sendinblue) is a French customer-relationship platform that combines email marketing, transactional email and SMTP relay, transactional and campaign SMS, WhatsAp...	44	exemplar
Salesforce Marketing Cloud	Salesforce Marketing Cloud Engagement is an enterprise digital marketing platform for customer journeys, email marketing, mobile messaging (SMS/MMS and push), advertising, conte...	17	exemplar
Amazon Pinpoint	Amazon Pinpoint is a flexible and scalable outbound and inbound marketing communications service that enables you to engage with customers across multiple messaging channels inc...	5	exemplar
Mailchimp	Mailchimp is an Intuit company providing a marketing automation platform and email marketing service for managing mailing lists, creating email marketing campaigns, and automati...	45	exemplar
Boom Ai	Boom AI (useboom.ai) is a Y Combinator-backed (Fall 2025) San Francisco company building "an AI workforce for your customers" — autonomous agents that hold real, multi-turn conv...	15	exemplar
Leadping	Leadping is a lead-management and responsible-outreach platform for teams that need to move a new inbound lead from source to first touch without stitching together separate too...	31	exemplar
OneSignal	OneSignal is a lifecycle customer engagement platform for mobile push, web push, email, SMS/RCS, in-app messaging and iOS Live Activities, orchestrated through Journeys, segment...	6	exemplar
Stannp	Stannp is a direct mail platform that enables businesses to send physical postcards and letters programmatically via a REST API. The platform lets developers create campaigns, u...	7	exemplar
Close	Close is an inside-sales CRM with calling, email, SMS, and WhatsApp built in. The Close API exposes leads, contacts, opportunities, tasks, activities (calls, emails, SMS, meetin...	64	exemplar
Braze	Braze is a leading customer engagement platform providing REST APIs for managing user profiles, orchestrating multi-channel messaging campaigns, and exporting analytics. The pla...	24	exemplar
GetResponse	GetResponse is an all-in-one marketing platform for email marketing, marketing automation, landing pages, websites, webinars, SMS, web push, ecommerce and content monetization, ...	49	exemplar
Klaviyo	Klaviyo is a marketing automation and customer data platform built for ecommerce. Build custom integrations to bring data into Klaviyo to create personalized experiences across ...	23	exemplar
Telesign	Telesign provides a comprehensive suite of communications and security APIs enabling businesses to verify phone numbers, send SMS, omnichannel and voice messages, and assess fra...	31	exemplar
Attentive	Attentive is a martech SMS and email marketing platform for e-commerce and retail brands. Its developer platform exposes REST APIs (v1 and v2) plus a GraphQL API for managing su...	19	exemplar
Sinch	Sinch is a cloud communications platform providing APIs for SMS, voice, video, fax, verification, and omnichannel messaging. It enables businesses to integrate global communicat...	101	exemplar
8x8	8x8, Inc. is a San Jose, California headquartered cloud communications provider that sells an integrated UCaaS, CCaaS and CPaaS platform (marketed as XCaaS) to business buyers i...	70	exemplar
Vonage	Vonage (part of Ericsson) provides cloud communications APIs for voice, SMS, messaging, video, and verification. The Vonage API platform enables businesses to embed communicatio...	59	exemplar
Adobe Campaign	Adobe Campaign is Adobe's enterprise cross-channel campaign management and marketing automation platform, orchestrating email, SMS, push, direct mail and web messaging against a...	20	exemplar
Mapp Marketing Cloud	Mapp is a German-headquartered marketing technology vendor whose Mapp Marketing Cloud combines cross-channel campaign execution (Mapp Engage), digital analytics and customer int...	37	exemplar
Regal	Regal is a New York City-based AI Agent Platform purpose-built for contact center operations. The Regal platform lets enterprises design, test, deploy, monitor, and continuously...	10	exemplar
MoEngage	MoEngage is an insights-led customer engagement and cross-channel marketing automation platform used by consumer brands to unify customer data, segment audiences, and orchestrat...	46	exemplar
SendPulse	SendPulse is a multichannel marketing automation platform covering bulk email, SMTP transactional email, SMS, web push, website pop-ups, a CRM, an online course builder, and cha...	85	exemplar
Constant Contact	Constant Contact is a small-business email and digital marketing platform offering email campaigns, automation, SMS, contact management, surveys, and events. The Constant Contac...	19	exemplar
Zoom Phone	Zoom Phone is the cloud PBX / UCaaS voice product of Zoom Communications, headquartered in San Jose, California, and sold worldwide from its United States home market. It replac...	51	exemplar
Iterable	Iterable is an AI customer engagement platform that powers unified cross-channel marketing experiences and empowers marketers to create, optimize, and measure relevant interacti...	29	exemplar
SMTP2GO	SMTP2GO is a New Zealand-founded email and SMS delivery platform, running since 2006, that sends and tracks transactional and marketing messages over SMTP relay or a JSON REST A...	18	exemplar
SignalWire	SignalWire is a Programmable Unified Communications (PUC) platform for voice, messaging, video, fax, SIP and AI voice agents, built by the team behind FreeSWITCH. It publishes t...	80	exemplar
SAP Emarsys	SAP Emarsys (formerly Emarsys, acquired by SAP in 2020 and now marketed as part of SAP Engagement Cloud) is an omnichannel customer engagement and marketing automation platform ...	30	exemplar
Blueshift	Blueshift is an AI-powered customer engagement and customer data platform (CDP) that unifies customer profiles, product and content catalogs, and behavioural event streams, then...	22	strong
Ortto	Ortto (formerly Autopilot) is a marketing automation, customer data platform (CDP), and analytics product. Its REST API at https://api.ap3api.com/v1 lets applications create and...	6	strong
Orange Business	Orange Business is the B2B, telco-cloud, and developer arm of Orange S.A. — France's leading telecommunications group operating across Europe, the Middle East, and Africa. The c...	86	strong
Acoustic	Acoustic is a real-time behavioral marketing platform for B2C companies, delivering omnichannel customer engagement across email, SMS, WhatsApp, mobile push and web. Its develop...	33	strong
Syllable	Syllable is a Mountain View, California company (founded 2017) that operates an agentic platform for building, deploying and optimizing AI voice, SMS, email, web-chat and WhatsA...	40	strong
Vibes Platform	Vibes is a mobile engagement platform that provides APIs for SMS messaging, push notifications, RCS for Business, and mobile marketing campaigns. The platform APIs support broad...	30	strong
Telstra	Telstra is Australia's largest telecommunications and mobile network operator, providing fixed broadband, mobile voice and data, enterprise networking, and IoT connectivity acro...	27	strong
CM.com	CM.com is a Dutch CPaaS and commerce company providing APIs for business messaging (SMS, WhatsApp, RCS, email), voice, payments, identity verification, electronic signing, live-...	167	strong
Optus	Optus (Singtel Optus Pty Limited) is Australia's second-largest telecommunications carrier, wholly owned by Singapore's Singtel and headquartered in Macquarie Park, Sydney. It r...	16	strong
Novu	Novu is the open-source notification infrastructure for developers. A single REST API and workflow engine route a triggered event across in-app inbox, email, SMS, push, chat (Sl...	20	strong
Hustle	Hustle is an employee-owned text, video, and voice communications platform that lets organizations engage audiences at scale from a single interface. It combines broadcast texti...	10	strong
Genesys	Genesys is a global cloud customer experience (CX) and contact center software company whose flagship Genesys Cloud CX platform powers omnichannel customer engagement, routing, ...	87	strong
KPN	Koninklijke KPN N.V. is the incumbent telecommunications and IT provider of the Netherlands, operating the country's national fixed (copper and fibre) and mobile networks and se...	103	strong
The Mobile First Company	The Mobile-First Company is a French / US (Miami HQ) startup building a suite of mobile-first, AI-powered business apps for small teams under a "one problem, one app" philosophy...	13	strong
AskNicely	AskNicely is a customer-experience (CX) platform for service businesses, built around Net Promoter Score, CSAT and 5-Star surveys delivered by email, SMS, web badge and in-app. ...	6	strong
Knock	Knock is notifications infrastructure as a service — a product and customer messaging platform you use to power transactional, lifecycle, broadcast, and in-product messaging acr...	32	strong
Bandwidth	Bandwidth is a leading cloud-based communications platform providing voice, messaging, emergency calling, phone number management, multi-factor authentication, and toll-free ver...	8	strong
Postscript	Postscript is an SMS and RCS marketing platform built for Shopify brands, covering list growth, campaign and automation delivery, conversational messaging, AI shopping assistant...	7	strong
DialNexa	DialNexa is a Voice AI agents platform for sales calls, lead qualification, follow-ups, meeting booking, collections and support workflows, with a strong focus on Indian-market ...	13	strong
Dotdigital	Dotdigital is a UK-headquartered customer engagement platform (LSE: DOTD) whose Marketing product combines email, SMS, MMS, WhatsApp, push, app messaging, chat and web personali...	58	strong
Numbers Online	Numbers Online is a phone-number trust and intelligence service operated by Evergrow Management Pte. Ltd. of Singapore. It runs a free public reverse phone lookup with a communi...	17	strong
Spruce Health	Spruce Health is a HIPAA-compliant healthcare communication platform that unifies phone, SMS, secure messaging, video, e-fax, team chat, mobile payments and VoIP phone lines int...	15	strong
Zavu	Zavu is a unified multi-channel messaging platform that consolidates SMS, WhatsApp, Telegram, Email, Voice, and Messenger behind a single REST API, so developers integrate once ...	21	strong
RingCentral	RingCentral provides unified cloud communications for businesses including voice, video, messaging, contact center, and events. The RingCentral API exposes call control, SMS, fa...	84	strong
Swisscom	Swisscom is Switzerland's largest telecommunications provider and the incumbent mobile network operator, fixed-line carrier and IT services company for the Swiss market, majorit...	14	strong
Unifonic	Unifonic is a Saudi Arabia-based customer engagement and CPaaS platform, backed by SoftBank Vision Fund, that powers SMS, WhatsApp, voice, push notification, and OTP-verificatio...	8	strong
Gridspace	Gridspace is a voice AI company (founded 2013) that now operates as Guava (goguava.ai) — a voice agent platform built for regulated industries such as healthcare, banking, insur...	3	strong
Sonetel	Sonetel provides business phone numbers and communication services for entrepreneurs and small businesses, offering local phone numbers in 78 countries that ring in the Sonetel ...	19	strong
Dyspatch	Dyspatch is an email template management and production platform that lets marketing, design, and engineering teams build, collaborate on, approve, localize, and publish transac...	20	strong
Silverpop	Silverpop Engage is the email marketing, marketing automation and transactional messaging API now sold as Acoustic Campaign, and one of the longest-lived commercial marketing AP...	6	strong
CloudTalk	CloudTalk is an AI-powered cloud call center and business phone system (CCaaS) for sales and customer support teams, backed by Point Nine. Its public REST API (served at https:/...	15	strong
Cordial	Cordial is a cross-channel marketing and customer data platform headquartered in San Diego, California, used by consumer brands to unify customer data and orchestrate personaliz...	25	strong
Synthflow	Synthflow is an enterprise-ready no-code Voice AI platform for automating phone conversations at scale. The product combines a visual agent designer with in-house telephony, sub...	19	strong
Bluecore	Bluecore is a retail marketing technology platform that unifies shopper identity, behavior, and product data into a customer data platform with 20+ predictive AI models, cross-c...	9	strong
Phonic	Phonic is a San Francisco voice AI company (founded 2024, seed-backed by Lux Capital) building the first end-to-end speech-to-speech platform for reliable conversational voice a...	10	strong
Fixie	Fixie is the company behind Ultravox Realtime, a speech-native voice AI platform for building natural, low-latency conversational voice agents. Rather than transcribing speech t...	14	strong
Kixie	Kixie is a Los Angeles based sales-engagement and revenue-communications platform built around PowerCall, a multi-line power dialer, business phone service and SMS/MMS product t...	3	strong
Kudosity	Kudosity is an Australian business messaging platform — formerly Burst SMS / TransmitSMS — running two live public REST APIs on two hosts. The Transmit Message API (v2) covers S...	12	strong
Hatch	Hatch is an AI-powered customer communication platform for service businesses, unifying voice, SMS, and email into a single system with custom AI agents (AI CSRs) that text and ...	1	strong
Saperly	Saperly is the phone carrier for AI agents: one API call gives an agent a real phone number with inbound and outbound voice and SMS, routing to a hosted in-network voice agent o...	16	strong
Wunderkind	Wunderkind (formerly BounceX) is a performance marketing and identity resolution platform that turns anonymous website and mobile-app traffic into triggered, one-to-one email an...	7	strong
Amazon SNS	Amazon Simple Notification Service (SNS) is a fully managed messaging service for both application-to-application (A2A) and application-to-person (A2P) communication. It enables...	1	strong
Verizon	Verizon is a leading telecommunications company providing wireless, wireline, broadband, and global enterprise services. Verizon offers developer APIs for IoT device management ...	18	strong
VeraDial	VeraDial is an AI receptionist and business phone app for small businesses in the United States and Canada, built by Graham Thomson in Toronto. It gives a business a dedicated U...	6	strong
Speko	Speko is a voice-AI gateway - "one API for the whole voice stack." It continuously benchmarks speech-to-text, LLM, and text-to-speech providers and routes every call to the best...	4	strong
MailerSend	MailerSend is a transactional email and SMS platform built for developers. Its v1 REST API covers email sending (single, bulk to 500 objects per request, and scheduled up to 72 ...	8	strong
Zoom	Zoom is a communications platform that allows users to connect with video, audio, phone, and chat. The Zoom API provides programmatic access to Zoom's core features including me...	47	strong
Teliax	Teliax is a wholesale and carrier-grade telecommunications provider that now operates as Ringer Network Solutions: www.teliax.com redirects to ringer.tel, whose homepage lists '...	48	strong
Tata Communications	Tata Communications is the global wholesale carrier and digital-infrastructure arm of India's Tata Group, headquartered in Mumbai. It owns one of the world's largest subsea cabl...	9	strong
Phone Com	Phone.com is a cloud business phone and unified communications provider for small and mid-sized businesses, offering VoIP calling, SMS/MMS, video conferencing, fax, and virtual ...	68	strong
SendHub	SendHub is a business text messaging platform for SMS/MMS marketing campaigns, two-way texting, appointment reminders, bulk messaging, SMS surveys, group messaging, and VoIP cal...	6	strong
Bolna	Bolna is a voice AI platform for building, testing, deploying, and scaling conversational voice agents that place and receive phone calls with human-like, multilingual intellige...	1	strong
Crescendo Lab	Crescendo Lab is a Taiwan-based, Asia-leading AI omnichannel customer communication software company (cresclab.com) serving 800+ global brands, and a LINE Biz-Solutions Gold Par...	5	strong
Insider	Insider (rebranded Insider One; useinsider.com now redirects to insiderone.com) is an AI-native customer engagement and personalization platform used by 2,000+ global brands. It...	26	strong
Community	Community is a conversational messaging platform that lets brands, creators, artists, sports teams, media companies, and political organizations reach their audiences directly o...	4	developing
Neutrino API	Neutrino API is a general-purpose API collection that solves common but recurring software-development problems: data validation, telephony, geolocation, security and networking...	7	developing
Gladly	Gladly is a San Francisco–based people-centered customer service AI platform. The Gladly Hero agent workspace unifies voice, chat, SMS, email, and social into a single, channel-...	28	developing
VOYGR	VOYGR provides real-world place intelligence for AI apps and agents, delivering continuous location and point-of-interest (POI) data validation and enrichment. Its Location Fres...	3	developing
Invoca	Invoca is an AI-powered revenue execution platform that connects marketing and sales teams by tracking and analyzing inbound phone calls across the buying journey. Its call trac...	2	developing
Quo	Quo (formerly OpenPhone) is an AI-powered business communication platform that unifies calls, texts, and contacts in one shared workspace for startups and small businesses. Its ...	9	developing
Avaya	Avaya is a global enterprise communications company whose developer surface spans two cloud platforms: Avaya Infinity, the cloud-native customer experience platform launched in ...	84	developing
SimpleTexting	SimpleTexting is a business SMS and MMS marketing platform. Its v2 REST API lets developers send single text messages, run bulk campaigns to lists and segments, manage contacts ...	12	developing
Bright Pattern	Bright Pattern is a cloud contact center (CCaaS) software company whose omnichannel platform routes voice, IVR, email, chat, SMS/MMS, video and social messenger conversations to...	14	developing
MTN Group	MTN Group is Africa's largest mobile network operator, headquartered in Johannesburg, South Africa, serving roughly 290 million subscribers across around 16 markets in Africa. B...	145	developing
VoiceGenie	VoiceGenie (Ori Labs Ltd.) is a conversational voice AI platform for sales automation that lets teams deploy AI voice agents to run outbound and inbound phone calls end to end. ...	2	developing
Route Mobile	Route Mobile Limited is a Mumbai-headquartered cloud communications platform (CPaaS) provider and one of India's largest A2P messaging aggregators, listed on the BSE and NSE and...	34	developing
Splio	Splio is a Paris-headquartered customer marketing platform for retail, e-commerce, restaurant and travel brands, combining a Customer Data Platform, omnichannel marketing automa...	18	developing
Sailthru	Sailthru is a cross-channel relationship-marketing and personalization platform built for media, publishing, retail and e-commerce brands, unifying email, SMS, mobile push, in-a...	2	developing
CallRail	CallRail is a call tracking and conversation intelligence platform that attributes phone calls, texts, and form fills to marketing campaigns and applies AI-powered transcription...	4	developing
Reliance Jio	Reliance Jio Infocomm, the telecom arm of Jio Platforms Limited and Reliance Industries, is India's largest mobile network operator, serving roughly half a billion subscribers o...	3	developing
Totogi	Totogi LLC is an Austin, Texas based vertical AI and BSS software vendor that builds telecom operator software natively on the public cloud (AWS). Its two products are the Totog...	2	developing
Syniverse	Syniverse is a United States headquartered wholesale telecommunications company that sits between mobile network operators rather than in front of consumers. Its mobility busine...	48	developing
Weave	Weave (Weave Communications, Inc., NYSE: WEAV) is an all-in-one customer communication and payments platform built for small and medium healthcare and services businesses — dent...	9	developing
Netcore Cloud	Netcore Cloud (Netcore) is a customer engagement and CPaaS platform offering transactional and marketing email delivery (formerly Pepipost), SMS, WhatsApp and RCS messaging, ema...	47	developing
Netomi	Netomi (founded 2016 as msg.ai) is an enterprise agentic AI platform for customer experience. Its "Agentic OS for CX" orchestrates a network of AI agents across chat, email, tel...	34	developing
Cellulant	Cellulant is a pan-African payments platform headquartered in Nairobi, Kenya, operating across 35 African countries. Its flagship product Tingg is a single API that lets busines...	6	developing
TPG Telecom	TPG Telecom Limited is Australia's second-largest telecommunications company and an ASX-listed mobile network operator and fixed broadband carrier, formed by the 2020 merger of ...	2	developing
OutRival	OutRival is a conversational AI platform that deploys AI agents ("Digital Workers" / companions) to handle high-volume customer engagement across voice calls, SMS, and chat. Its...	25	developing
Orum	Orum is an AI-powered sales calling and performance platform, marketed as "The Calling Performance System for Sales Teams" and "the AI-powered Live Conversation Platform to supe...	0	developing
Responsys	Oracle Responsys (Oracle Responsys Campaign Management) is a B2C cross-channel marketing orchestration platform, originally founded as Responsys and acquired by Oracle in 2014, ...	27	developing
Emotive	Emotive is an SMS marketing platform for eCommerce brands, combining two-way conversational text messaging, behavioral triggers, and automation with a dedicated managed service ...	36	developing
Bird	Bird (formerly MessageBird) is an omnichannel customer communications platform offering REST APIs for email, SMS, WhatsApp, RCS, push notifications, voice, and data management. ...	65	developing
KORE Wireless	KORE Wireless (KORE Group Holdings) is an Atlanta, Georgia headquartered global IoT connectivity provider operating as a mobile virtual network operator (MVNO) across more than ...	35	developing
Podium	Podium is a customer communication platform providing a REST API for local businesses to manage text-based conversations, reviews, payment requests, lead capture forms, webchat,...	27	developing
ManyChat	ManyChat is a chat-marketing platform that lets businesses build automated conversations and marketing flows across Instagram Direct Messages, Facebook Messenger, WhatsApp, Tele...	4	developing
Telia Company	Telia Company is the Nordic and Baltic telecommunications group headquartered in Solna, Sweden, operating mobile and fixed networks in Sweden, Finland, Norway, Denmark, Lithuani...	25	developing
Bharti Airtel	Bharti Airtel Limited is an Indian multinational telecommunications operator headquartered in New Delhi, and one of the two dominant mobile network operators in its home market ...	20	developing
Nextiva	Nextiva is a Scottsdale, Arizona based cloud communications and customer experience company whose NextOS / NEXT platform combines UCaaS business phone service, contact center (N...	10	developing
Happyrobot	HappyRobot is an AI orchestration platform — "the AI operating system for the real economy" — that lets enterprises build, govern and deploy AI agents ("AI workers") into operat...	35	developing
Nfon	NFON AG is a European provider of cloud telephony and unified communications (UCaaS/CPaaS), headquartered in Munich and serving businesses across 15+ European countries. Its Clo...	52	developing
Sendbird	Sendbird provides APIs and SDKs for in-app chat, voice, video, AI chatbots, and omnichannel business messaging. Used by over 4,000 companies to build real-time communication exp...	7	developing
SuprSend	SuprSend is a notification infrastructure platform that enables engineering teams to build, manage, and scale multi-channel notifications through a single unified API. It suppor...	21	developing
BulkSMS	BulkSMS provides a business SMS platform enabling companies to send, receive and manage text messages globally. With over 25 years in business messaging, they support 180+ count...	6	developing
Thoughtly	Thoughtly is an AI voice and chat agent platform that helps revenue and support teams contact every lead across every channel — voice, SMS, email, WhatsApp, and iMessage. The pr...	4	developing
AT&T	AT&T Inc. is a multinational telecommunications holding company providing wireless and wireline communications, broadband, and business networking to consumers and enterprises. ...	30	developing
Kaleyra	Kaleyra is a global omnichannel CPaaS provider (a Tata Communications company since October 2023) offering SMS, WhatsApp, RCS, Voice, Email, Verify (OTP), and Video communicatio...	6	developing
Avochato	Avochato provides the easiest business text messaging software, offering SMS, RCS, voice calls, and live chat solutions. Their platform includes automation features, AI agents, ...	7	developing
AgentPhone	AgentPhone is the telephony infrastructure layer for AI agents. A single REST API provisions real US/Canada phone numbers for agents with voice calling, SMS, MMS, and iMessage b...	12	developing
Cisco Voice Portal	Cisco Voice Portal (CVP) is an enterprise-class Voice XML (VXML) browser and call control platform that enables self-service applications for voice, video, and multimodal intera...	24	developing
Paradox	APIs and resources for Paradox, a conversational AI recruiting assistant platform powered by Olivia, an AI assistant that automates candidate screening, interview scheduling, an...	11	developing
Sarj AI Developer API	Sarj.ai is a voice and chat AI agent platform built for Arabic, English and Urdu, focused on the Saudi and wider MENA market. The public developer surface is a REST API for outb...	49	developing
seven.io	seven.io (formerly sms77) is a German CPaaS provider in Kiel offering a REST API for SMS, voice calls, RCS, WhatsApp, number lookup (HLR/MNP/CNAM), contacts and webhooks.	12	developing
Conversica	Conversica is an AI conversation automation company - "The Conversation Company" - whose Revenue Digital Assistants and AI Agents hold two-way, natural-language conversations wi...	2	developing
FreJun Teler	FreJun Teler is a developer-first programmable voice/telephony API (CPaaS) that handles carriers, phone numbers, and real-time audio streaming so developers can connect AI model...	12	developing
Bitrix24	Bitrix24 is an all-in-one collaboration and business management suite that combines CRM, tasks and projects, contact center, telephony, documents, websites, and HR tooling in a ...	35	developing
MagicBell	MagicBell is a multichannel push notification infrastructure platform that enables developers to deliver in-app, email, mobile push, web push, SMS, Slack, and Microsoft Teams no...	27	developing
Fyno	Fyno is a notification routing and orchestration platform that provides a single unified REST API for sending and managing notifications across 10+ communication channels includ...	10	developing
Whippy	Whippy is an AI-powered customer communication platform unifying SMS, email, voice, and fax into a single omnichannel inbox. Its public REST API (X-WHIPPY-KEY header) lets devel...	7	developing
Plivo	Plivo is a global communications platform offering programmable Voice, Messaging (SMS/MMS/WhatsApp), SIP Trunking, Verify, and Lookup APIs, plus an AI Voice Agent platform. The ...	22	thin
Wazo	Wazo Communication Inc. builds the Wazo Platform, an open-source (GPL-3.0) programmable unified-communications and contact-centre platform assembled from Asterisk, Kamailio, Rab...	113	thin
Esendex	Esendex provides global business SMS and multichannel messaging services, offering APIs for SMS, WhatsApp, RCS, Email, Voice and more. It serves enterprises across multiple coun...	3	thin
Phonely	Phonely is an AI voice agent platform that answers business phone calls in real time with large-language-model-powered conversation, sub-400ms response latency, 1,000+ voices ac...	2	thin
Clickatell	Clickatell is a chat commerce and CPaaS company offering SMS and WhatsApp messaging (One API), the SMS API, Chat 2 Pay payments-in-chat, and Chat Flow workflow APIs for businesses.	8	thin
engageSPARK	engageSPARK is a mobile messaging and engagement platform for reaching hard-to-reach populations in low- and middle-income countries at scale. It lets NGOs, researchers, microfi...	7	thin
MirrorFly Messages API	MirrorFly is a self-hosted CPaaS from CONTUS TECH (Chennai, India) that lets teams embed real-time chat, messaging, HD voice, video calling, live streaming, SIP/VoIP and activit...	1	thin
Burner	Burner is the original second-phone-number app from Ad Hoc Labs (founded 2012, Los Angeles), letting people create multiple temporary or permanent phone numbers on a single iOS ...	1	thin
Appgain	Appgain is an omnichannel messaging and mobile marketing automation platform, originally out of the MENA region, that lets marketers acquire, engage, and retain mobile and web u...	3	thin
RubiConnect	Enterprise business-messaging (CPaaS) platform for RCS Business Messaging and WhatsApp Business, exposing a REST API with a public OpenAPI contract and a hosted MCP server with ...	5	thin
Rainbow	Rainbow is a CPaaS platform from Alcatel-Lucent Enterprise (ALE) that lets developers enrich applications with chat, group chat, voice, video, file sharing, and telephony PBX fe...	7	thin
Vapi	Vapi is a voice AI agents platform for building, testing, and deploying real-time voice agents across phone, web, and SIP. The Vapi REST API exposes assistants, calls, chats, ca...	16	thin
Alianza	Alianza is a cloud communications software company founded in 2009 and headquartered in Utah, providing a full-stack cloud voice and communications platform to more than 1,000 c...	60	thin
JustCall	JustCall is a cloud-based phone system and contact center platform that provides voice calling, SMS/MMS messaging, IVR, call analytics, and contact management for small and mid-...	18	thin
PlusThis	PlusThis is an Arizona-based marketing automation add-on company, founded in 2011, that sells a toolkit of roughly seventy no-code "tools" which bolt extra behaviour onto a CRM ...	0	thin
Courier	Courier is a multi-channel notification API offering routing across email, SMS, push, chat, and in-app, with templates, preferences, and a no-code studio.	22	thin
Microsoft Azure Communication Services	Azure Communication Services REST API.	3	thin
GOV.UK Notify	GOV.UK Notify is a UK government notification service operated by the Government Digital Service (GDS) that enables central government, local authorities, NHS organisations, and...	9	thin
Push	Push (PUSHTech, now operating as Cendyn CRM after its acquisition by Cendyn) is a CRM and customer data platform specialised in hospitality — the guest journey for hotels — with...	15	thin
Textla	Textla is a business texting platform for sending bulk SMS marketing campaigns and two-way conversational messages to customers. It provides contact list segmentation, message s...	0	thin
Comcast	Comcast Corporation is a global media and technology company with two primary businesses, Comcast Cable (Xfinity) and NBCUniversal, providing video, internet, voice, wireless, a...	3	thin
MSG91	MSG91 provides a comprehensive cloud communications platform offering SMS, voice, email, WhatsApp, RCS, and OTP services. It enables businesses to engage customers across multip...	1	thin
Movius	Movius is a secure enterprise mobile communications company whose flagship product, MultiLine, gives employees a separate, compliant business identity (voice, SMS, MMS, and soci...	1	thin
Pushbullet	Pushbullet is a cross-device messaging and notification service that lets users sync notifications, links, files, and SMS between phones, tablets, and computers. The Pushbullet ...	11	thin
Sinch Verification API	The Sinch Verification API (Sinch Verify) is a dedicated phone number verification product for confirming that a user controls a given mobile number - the core of OTP, two-facto...	3	thin
RingCaptcha (ThriveCom)	RingCaptcha, operated by ThriveCom, is a phone-verification and two-factor authentication (2FA) platform that helps businesses confirm real users and block fraud. It delivers on...	1	thin
Tenfold	Tenfold (a LivePerson company) is a computer-telephony integration (CTI) platform — marketed as the "Customer Experience Cloud" — that connects phone systems and contact-center ...	8	thin
Exotel	Exotel is an Indian cloud telephony and customer-engagement (CPaaS) platform offering programmable voice, SMS, virtual numbers (ExoPhones), IVR/call flows, call campaigns, and c...	6	thin
NewVoiceMedia	NewVoiceMedia is a cloud contact-center (CCaaS) platform founded in the UK and acquired by Vonage in 2018, now delivered as Vonage Contact Center (VCC). Its developer program, s...	1	thin
Talkdesk	Talkdesk is a cloud contact center platform with Customer Experience Automation (CXA) capabilities including omnichannel engagement, workforce engagement management, quality man...	1	thin
Bitcall	Bitcall provides a self‑service telecom platform offering cheap international voice termination, virtual numbers, SMS OTP verification, eSIM data plans, HLR/number lookup and ac...	1	thin
SMSAPI	SMSAPI is a European bulk business-messaging provider headquartered in Poland and part of LINK Mobility. Its REST API delivers SMS, MMS, and voice (VMS) messaging, email marketi...	11	thin
Deutsche Telekom	Deutsche Telekom AG is Europe's largest telecommunications operator, headquartered in Bonn, Germany, serving more than 250 million mobile customers across 50+ countries. It is t...	50	thin
Messente	Messente is an Estonian CPaaS provider of global messaging and user verification services. A single Omnimessage endpoint sends SMS, Viber, WhatsApp, and Telegram with an automat...	11	thin
Telkomsel	Telkomsel (PT Telekomunikasi Selular) is Indonesia's largest mobile network operator. Through DigiHub (digihub.telkomsel.com), its API marketplace, Telkomsel exposes network and...	8	thin
ClickSend	ClickSend is a cloud communications company providing a single REST API for business messaging across SMS, MMS, voice / text-to-speech, transactional email, and physical post - ...	10	thin
NotificationAPI	NotificationAPI is notifications infrastructure for developers. A single REST API and drop-in in-app inbox component send multi-channel notifications - email, SMS, mobile and we...	7	thin
Samora AI	Samora AI is a Y Combinator (W2026) company building multilingual voice agents that automate high-volume inbound and outbound calling for financial services, recruitment, health...	3	thin
Textmagic	Textmagic is a business text-messaging platform offering two-way SMS, bulk messaging, SMS marketing, and team inboxes. Its REST API (v2) lets developers send and receive message...	11	emerging
Custom Chat API \| MirrorFly	MirrorFly is a self-hosted CPaaS providing token-authenticated REST Chat Platform APIs (User and Admin) plus SDKs for in-app chat, HD video/voice calling, VoIP, contact center, ...	1	emerging
Prelude	Prelude is a phone and email verification API - "the trust layer between your signups and your business." Its Verify API creates and checks one-time passcodes (OTP) across SMS, ...	4	emerging
Vocode	Vocode is an open-source Python library (vocode-core, MIT licensed) for building real-time, streaming voice AI agents that run over phone calls, plus a hosted REST API at https:...	9	emerging
Vonage Video API	Vonage Video API (formerly OpenTok / TokBox) is a programmable live video platform for building real-time interactive video, voice, and messaging into apps. Its REST API on the ...	9	emerging
46elks	46elks is a Swedish communications platform as a service (CPaaS) offering a simple HTTP REST API for sending and receiving SMS and MMS, making and receiving voice calls with pro...	5	emerging
Termii	Termii is an African multichannel messaging platform whose REST API lets businesses send SMS, voice, WhatsApp, and email; generate and verify one-time passwords (OTP) for custom...	6	emerging
Resulticks	Resulticks is an enterprise omnichannel marketing automation and audience engagement platform, operating under the RESUL brand. It pairs a cookie-independent customer data platf...	1	emerging
Gupshup	Gupshup is a conversational messaging and CPaaS platform (headquartered in India) that lets businesses send and receive messages across WhatsApp, SMS, RCS, and other channels, p...	6	emerging
Engagespot	Engagespot is a notification infrastructure platform that provides developers with a unified REST API to send multi-channel notifications including in-app, email, web push, mobi...	1	emerging
BICS	BICS is an international communications enabler and wholesale carrier, part of Proximus Global (alongside Telesign and Route Mobile). Its developer portal exposes OAuth2-secured...	24	emerging
Africa's Talking	Africa's Talking is a pan-African communications platform that exposes a unified set of REST APIs for SMS, USSD, Voice, Airtime, Mobile Data, and Payments. Developers authentica...	6	emerging
Pushwoosh	Pushwoosh is a customer engagement platform offering push notifications, in-app messaging, email, SMS, and Live Activities for mobile and web. Strong segmentation and journey-bu...	5	emerging
Beside	Beside (operated by Interface, Inc. / Heart Hands, Inc.) is an AI-powered business phone system built for contractors, field teams, and small-to-medium businesses. Its AI recept...	0	emerging
Singtel	Singtel (Singapore Telecommunications Limited) is Singapore's largest mobile network operator and the anchor communications group of Southeast Asia, with a regional footprint th...	7	emerging
Sempre Health	Sempre Health is a San Francisco based digital health company, founded in 2015, that operates a behavior-based dynamic pricing platform for prescription medications. Working wit...	0	emerging
callagent.pro	callagent.pro provides human-like AI phone agents that answer and place real phone calls. Its REST Agent API (Bearer keys prefixed cak_live_, base https://www.callagent.pro) cov...	1	emerging
Orbitel	Orbitel is an Indian Communications Platform as a Service (CPaaS) provider offering SMS, WhatsApp, Voice, Email, and RCS solutions. The company markets enterprise‑grade messagin...	0	emerging
RetainIQ	RetainIQ is a full-service retention-marketing agency for direct-to-consumer (D2C) brands, delivering lifecycle email and SMS programs. Its work spans automated flows (welcome, ...	0	emerging
tyntec	tyntec is a CPaaS (Communications Platform as a Service) provider whose api.tyntec.com REST APIs let businesses verify, authenticate, and engage mobile consumers worldwide. The ...	7	emerging
Afilnet	Afilnet provides a cloud communications platform that enables businesses to send bulk SMS, automated voice calls, certified email and SMS, and manage two‑factor authentication v...	0	emerging
Callab AI	Callab AI, built by Clusterlabs, is a cloud-based voice AI platform that connects directly to legacy on-premises PBX/SBC telephony (Cisco UCM, Mitel, FreeSWITCH) via SIP trunk i...	1	emerging
TryWired	TryWired provides integrations that connect HubSpot with Telegram bots and Twilio SMS, enabling seamless communication syncing. The platform offers a HubSpot App Marketplace int...	1	emerging
Vodafone	Vodafone Group plc is a UK-headquartered (Newbury, England) multinational telecommunications company and one of the world's largest mobile and fixed network operators, with oper...	27	emerging
TranZak	TranZak is an African fintech platform headquartered in Douala, Cameroon, providing REST APIs for mobile money collections, merchant payments, bulk disbursements, bill payments,...	4	emerging
Chimelabs	Chime Labs (Chimelabs Holdings PTY LTD) builds an AI voice receptionist and call-automation platform purpose-built for Australian trades and service businesses — plumbers, elect...	0	emerging
Caremessage	CareMessage is a healthcare technology non-profit that operates one of the largest patient engagement platforms serving low-income and underserved populations across the United ...	0	emerging
Zalo	Zalo is a Vietnamese messaging platform (VNG Corporation). Zalo For Developers documents the Official Account API, the Zalo Notification Service (ZNS) API for template-based tra...	3	emerging
Altira Health	Altira Health is a San Francisco-based healthcare technology company, founded in 2025, building AI-powered clinical follow-up for health systems. Its virtual clinical assistant,...	0	emerging
Naver	Naver Corp. is South Korea's largest internet company, operating the Naver search portal, Naver Webtoon, Naver Pay, Naver Maps, Naver Shopping, WORKS Mobile, and the LINE messen...	18	emerging
Rakuten Mobile	Rakuten Mobile is the Japanese mobile network operator (MNO) of Rakuten Group, headquartered in Setagaya, Tokyo, and Japan's fourth nationwide carrier alongside NTT Docomo, KDDI...	3	emerging
Parloa	Parloa is an enterprise conversational AI platform for contact centers that automates voice and chat customer interactions across industries including financial services, utilit...	2	emerging
Mia	Mia (Mia Labs, Inc.) is an AI-powered phone agent platform built specifically for automotive dealerships. Its conversational voice AI answers calls 24/7 across sales, service, r...	0	minimal
T-Mobile	A major American wireless network operator and the second-largest carrier in the United States. Known for its Un-carrier strategy disrupting the wireless industry with simplifie...	1	minimal
Textsidekick	Textsidekick (Sidekick) is a Y Combinator-backed (S26) workforce communication and knowledge-management platform built for frontline workers who do not have a desk. Workers text...	0	minimal
SpotHopper	SpotHopper is a Milwaukee, Wisconsin based restaurant marketing and web technology company, founded in 2015, selling an all-in-one, AI-assisted platform to independent restauran...	0	minimal
EdSights	EdSights is a student voice and engagement platform for higher education. It pairs an AI-powered SMS chatbot with real-time analytics to collect continuous feedback from student...	0	minimal
Remind	Remind is a K-12 school-home communication platform that lets teachers, schools, and districts message students and families by text, app, email, and voice without exchanging pe...	0	minimal
Hi Marley	Hi Marley is an intelligent conversational platform built for the property and casualty (P&C) insurance industry, delivering carrier-to-policyholder communication over SMS. The ...	0	minimal
Pinger	Pinger, Inc. is a San Jose, California mobile communications company founded in 2005 by former Palm managers Greg Woock and Joe Sipher. It builds consumer and small-business cal...	0	minimal
UpSmith	UpSmith is a Dallas, Texas-based company backed by a16z that builds AI agents for home services and skilled trades businesses (HVAC, plumbing, electrical). Its platform texts cu...	0	minimal
Dialup	Dialup is a voice-chat app that revives the magic of talking on the phone by pairing people for one-on-one calls based on shared interests. It automates recurring, scheduled cal...	0	minimal
RealNetworks	RealNetworks is a Seattle-based technology company that pairs AI-powered computer-vision and secure-communication products with its long-running consumer media brands. Its portf...	0	minimal
Communications	An index and topic collection covering Communications Platform as a Service (CPaaS) and messaging-and-voice infrastructure APIs. This network gathers providers offering programm...	0	minimal
West Technology Group	West Technology Group is a cloud-based global technology company providing customer experience and communications solutions through its WestCX platform. The company operates thr...	0	minimal
Tomo	Tomo is a consumer "personal AI" application that lives in your text messages: users tell Tomo about their life, goals, problems, and aspirations over SMS, and the AI assistant ...	0	minimal
Center	Center is a personal assistant platform that operates via SMS and messaging. Users can text Center to ask questions, make bookings, manage errands, and access integrated service...	0	minimal
Jarvie	Jarvie is a consumer AI assistant from All Day Technologies, Inc. that lives inside iMessage and SMS group chats. Marketed as "your group chat sidekick," it helps people who tex...	0	minimal
VonBox	VonBox operated as Vonjour (vonjour.com), a Santa Monica, CA cloud communications startup offering phone, text messaging, and contact center services for small businesses, backe...	0	minimal
The Nudge	The Nudge is a free consumer lifestyle app that texts its members short videos from locals recommending their favorite real-world things to do — secret hikes, date ideas, restau...	0	minimal
GMS	GMS (Global Message Services) provides a multichannel communication platform offering CPaaS, email, SMS, WhatsApp, Viber, and chatbot solutions. Their APIs enable enterprises to...	0	minimal
Voxox	Voxox is the trade name of Telcentris, Inc., a San Diego, California cloud communications provider founded in 2006 by Bryan, Kevin and Robert Hertz. It sold hosted business phon...	0	minimal
Brooktrout Technology	Brooktrout Technology, Inc. was a Needham, Massachusetts telecommunications company founded in 1984 that designed fax and voice-processing hardware and software for computer tel...	0	minimal
Textaurant	Textaurant was an early SMS-based restaurant waitlist and table-management startup founded around 2010 by Josh Bob in Waltham, Massachusetts, and later surfaced as a 500 Global ...	0	minimal
Wupima	Wupima, Inc. was a Virginia-based mobile social intelligence company that did business as Hook Mobile, backed by 500 Global (500 Startups). Its App Growth Engine (AGE) product o...	0	minimal

APIs in this industry (4614)

Showing 200 of 4614 — search the full set on apis.io.

Communications Platform as a Service (CPaaS) by region (16)

Each region is a page of its own, holding only the communications platform as a service (cpaas) providers headquartered there. Greyed pills are below the 5-provider floor — published as a roster, without generated statistics.

Communications Platform as a Service (CPaaS) by country (21)

Country membership is matched on an exact country tag only — no headquarters signal — so these cells understate by construction and read lower than the region cuts above.

Related industries

Sub-sectors tracked in this industry: General.

Markets provisional

Kin Score markets whose measured providers carry this industry. Share is the fraction of the market's measured providers that carry it — it describes the market, not this industry.

Market	Share of the market's providers
Telecom Network APIs (CAMARA)	84%
Communications (CPaaS)	76%
Martech and Customer Data Platforms	39%

Cohort brief

Auto-generated

The 230 providers in the APIs.io catalog classified under Communications Platform as a Service (CPaaS), scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

230

of 233 in the catalog

Mean Kin Score

44.1

+21.9 vs catalog 22.2

Mean Agent Readiness

30.2

+18.2 vs catalog 12

Spread

0–91.6

median 47.3 · σ 20.7

How the 230 split by band

Exemplar 32Strong 54Developing 54Thin 38Emerging 32Minimal 20

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Quality	43.8	17.2	+26.6	230
Developer Ergonomics	47.6	23.2	+24.4	230
Operational Transparency	35.5	13	+22.5	230
Access Clarity	44.8	23.9	+20.9	230
Discoverability	68.7	57.9	+10.8	230
Contract Governance	12.7	6.5	+6.2	230

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes

Artifact	This cohort	Catalog	Difference
MCP server (any)	31%	13%	+18
MCP server (first-party)	30%	12%	+18
Agent Skills	0%	0%	0
OAuth scopes	30%	11%	+19
Security	99%	98%	+1
Arazzo workflows	5%	2%	+3
Governance rules	28%	16%	+12

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score

1 Twilio 91.6
2 Telnyx 86.1
3 Infobip 84.9
4 Customer.io 84.1
5 Brevo 80.8
6 Salesforce Marketing Cloud 79.1
7 Amazon Pinpoint 77.8
8 Mailchimp 76.7
9 Boom Ai 75.6
10 Leadping 75.4

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Regulations that reach this industry

The regimes a provider here operates under. A sectoral regime binds this cohort specifically and usually names an interface; a horizontal one binds by activity and almost never does. Profiles at API Evangelist.

Australia Spam Act 2003 horizontal Australia
CAN-SPAM horizontal United States (with UK and Canadian equivalents)
Canada's Anti-Spam Legislation horizontal Canada
UK Online Safety Act horizontal United Kingdom

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Communications Platform as a Service (CPaaS)

About this industry

Market demand

Leading adopters

AI & API adoption maturity

Providers (233)

APIs in this industry (4614)

Twilio A2p API

Twilio Access Tokens API

Twilio Accounts API

Twilio Alerts API

Twilio Alpha Senders API

Twilio Apps API

Twilio Archives API

Twilio Assistants API

Twilio Attempts API

Twilio Auth Tokens API

Twilio ByocTrunks API

Twilio Calls API

Twilio Challenges API

Twilio Channels API

Twilio Chat V3Channel API

Twilio Commands API

Twilio ComplianceInquiries API

Twilio Composition Hooks API

Twilio Compositions API

Twilio CompositionSettings API

Twilio Conferences API

Twilio Configs API

Twilio Configuration API

Twilio Configurations API

Twilio ConnectionPolicies API

Twilio Contacts API

Twilio Content API

Twilio Content V2Content And Approvals API

Twilio Content V2Content API

Twilio ContentAndApprovals API

Twilio Conversation Summaries API

Twilio Conversations API

Twilio Credentials API

Twilio Customer Profiles API

Twilio Data Mapping API

Twilio Deactivations API

Twilio Devices API

Twilio DialingPermissions API

Twilio Email Validation API

Twilio End Users API

Twilio EndUserTypes API

Twilio Enterprise Knowledge API

Twilio Entities API

Twilio ESimProfiles API

Twilio Events API

Twilio Exports API

Twilio Factors API

Twilio Fleets API

Twilio Flex Flows API

Twilio Flows API

Twilio Forms API

Twilio HostedNumber API

Twilio Iam V1Api Key API

Twilio Iam V1Get API Keys API

Twilio Iam V1New API Key API

Twilio Iam V1Role Permission API

Twilio Identifiers API

Twilio Identity Resolution Settings API

Twilio Insights API

Twilio Interactions API

Twilio IpCommands API

Twilio IpRecords API

Twilio Keys API

Twilio Knowledge Bases API

Twilio LegacyContent API

Twilio LinkShortening API

Twilio Lists API

Twilio Mail Send API

Twilio Marketplace API

Twilio Media API

Twilio MediaProcessors API

Twilio MediaRecordings API

Twilio Messages API