Best Communication APIs in the UK
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Compare the Top Communication APIs in the UK as of January 2026
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What are Communication APIs in the UK?
Communication APIs are interfaces that allow developers to integrate various communication features such as voice, video, messaging, and email into their applications, websites, or services. These APIs enable businesses to add real-time communication capabilities without building the infrastructure from scratch, offering functionality like SMS notifications, voice calls, video conferencing, in-app messaging, and more. By leveraging communication APIs, businesses can automate communication processes, improve customer engagement, and enhance user experience. Many of these APIs are flexible, allowing developers to customize and scale features based on specific needs. Communication APIs are essential for businesses looking to streamline communication and provide seamless, integrated experiences across different platforms and devices. Compare and read user reviews of the best Communication APIs in the UK currently available using the table below. This list is updated regularly.
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1
Twilio Messaging
Twilio
Twilio's Messaging API is a powerful tool that enables businesses to integrate messaging capabilities into their applications seamlessly. It offers a stable RESTful API that allows developers to send and receive SMS, MMS, and WhatsApp messages globally. With Twilio's Messaging API, businesses can automate and scale their communications, ensuring messages are delivered over the preferred channels of their customers. The API supports a variety of sender types, including long codes, short codes, toll-free numbers, and alphanumeric sender IDs, providing flexibility in how messages are sent. Additionally, Twilio's Messaging Services feature allows companies to group global senders and enable intelligent sending, automating sender selection, and handling compliance regulations. The API also supports inbound webhooks, allowing businesses to handle responses programmatically and engage in two-way conversations with their customers.Starting Price: $0.0079 per message -
2
Twilio
Twilio
Design and deploy your ideal customer engagement experience. Twilio is a single fully-programmable platform with flexible APIs for any channel and over 400+ integrations, backed by a community of over 9 million developers. Build accurate and personalized experiences for your customers, easily and at scale, using SMS and WhatsApp messaging, voice, video, email, and more. Browse documentation and SDKs in multiple coding languages, including Ruby, Python, PHP, Node.js, java, and C#, or jumpstart your first project with our open source code templates to quickly build production-ready communications apps. Sign up and start building today.Starting Price: $0.0085 per min -
3
ClickSend
ClickSend
ClickSend offers SMS, MMS, Voice, Online Mail, Email and Fax software for businesses. Our communications and messaging tools are simple to use, automate and integrate. That’s why they’re used by some of the most trusted brands, organisations and developers globally. Built for all, you can access ClickSend via our Dashboard, mobile app, flexible API or 900+ integrations. Plus, ClickSend offers helpful 24/7 support, and lightning fast delivery via a secure and reliable platform. From SMS marketing and alerts to bulk mailouts sent from your browser, join over 90,000+ businesses sending communications around the world. Our 100% uptime guarantee and lightning fast direct routes provide reliable messaging, no matter the channel. From small businesses to enterprise, ClickSend powers billions of messages around the world with 232+ direct carrier connections. Plus, ClickSend is always pay-as-you-go. That’s why ClickSend is business communications, solved.Starting Price: $20 minimum topup -
4
Telnyx
Telnyx
See how the developer friendly Telnyx API can transform your business communications. Telnyx is an all-in-one communication platform designed to be tailored exactly to your needs. We created our network with real-time communications in mind so we can deliver quality calls, messaging, and data around the world. Easily build reliable messaging with our SMS API. Keep your data safe by setting up two-factor authentication using SMS or voice codes. Plug and play your VoIP setup in minutes and get carrier-grade voice with elastic SIP trunks. Our cloud-agnostic approach means you can rest easy knowing you are protecting in case of a network failure. With Telnyx deploy communications exactly to specifications. -
5
Weavy
Weavy
The complete in-app collaboration API and SDK. Add contextual activity feeds, chat, and document collaboration directly into your apps to increase user engagement, improve in-app retention, and reduce customer churn. All Weavy features include integrations to the third party tools your users are already familiar with: add capabilities for Zoom and Teams video conferencing, Google Drive, Dropbox, or Box file sharing, document sync and versioning contextually inside your app. Weavy allows app developers to quickly add the features that users need to be productive and interactive, directly within the app environment. With our SDK and APIs, you can deploy chat, feeds, and document sync in a matter of days, not months, and at a fraction the cost to build in-house. Focus on your core product while simultaneously adding functionality that makes your user experience not only better, but increases user engagement and dependency on your app.Starting Price: $0/Month -
6
AVOXI
AVOXI
The effective, affordable, and easy-to-use cloud-based call center software, AVOXI Genius. Easily manage your business communications from an intuitive, web-based contact center. AVOXI Genius is the first platform to integrate your contact center solution with your voice service, with virtual phone numbers available for instant activation in 170+ countries. With plans starting at $19.99 per user, AVOXI Genius is one of the most affordable solutions worldwide! Get 2 months free--limited time only.Starting Price: $19.99/month/user -
7
TENIOS
TENIOS
TENIOS is a German-based communications provider specializing in advanced AI phone assistant and telephony solutions for businesses. Their comprehensive telecom-platform offers services such as virtual phone numbers, intelligent call routing, interactive voice response (IVR) systems, SMS, RCS, and a robust Voice API for seamless integration of voice applications. TENIOS also provides AI-powered phone assistants to automate customer interactions, enhancing efficiency in contact centers and diverse sectors with high call volumes. With over two decades of experience and hosting in Germany, TENIOS ensures reliable and scalable communication solutions tailored to meet diverse business needs.Starting Price: €50/ month (Pay as YouGo) -
8
MSG91
Walkover Web Solutions
MSG91, a cloud communication platform strives to help businesses and developers to seamlessly add communication to their services and software through communication APIs (SMS, Email, Voice, RCS, WhatsApp, and more) and ready-to-use solutions like Cloud contact center and customer segmentation products.Starting Price: $10.00/one-time -
9
Innoinstant
Innocrux
Innoinstant offers a customized communication solution for every industry across devices and platforms. Set up a white-labeled communication application scalability, security, and reliability. With customizable APIs and SDKs, ensure real-time communication for every industry and use case. Lag-free virtual classrooms, secure financial transactions, interactive video and text chats on live streams, Gaming, E-Commerce, dating, anything, and everything is possible with 100% customizations. With Industry-standard security, encryption, and signal protocol Secure and protect user communication with end-to-end encryption. Our powerful APIs and SDKs help set up effective communication through chat, voice, and video. Enjoy the benefits of communication with robust payment gateway, file sharing, screen recording, and unlimited calls and translate words to business. The application development is entirely tailor-made to suit every industry needs that works on any platform or device. -
10
Bird
Bird
Bird (formerly MessageBird) is the next-generation CRM for Marketing, Sales, and Payments, powering over 5 trillion annual messages across Email, SMS, and WhatsApp. Leading brands grow cost-efficiently with Bird through personalized interactions on Email, SMS, and WhatsApp. The world's most innovative companies build communication solutions using Bird's applications and APIs. Get started today and talk to your customers over any channel, for any use case, anywhere in the world. Marketing messages, push notifications, order updates, delivery alerts and more. Operational bottlenecks slowing your growth? Use automated conversations and workflows to collect critical information up front, reduce manual tasks, implement self-service flows, and route chats to the right agent. Get up and running in minutes on our reliable, auto-scaling APIs with extensive documentations, complete API references and intuitive SDKs.Starting Price: $45 per month -
11
CometChat
CometChat
CometChat is a chat API and in-app messaging SDK (software development kit) that enables users to integrate HD voice and video calling, as well as text chat functionality directly into their mobile and web apps. CometChat also supports features such as push notifications, read receipts, typing indicators, real-time translation, and more. CometChat allows users to create their own user interface for private or group chat applications. Customization tools let users personalize various elements of their chat app. The platform also provides users with the tools to add voice, and video calling and conferencing capabilities to their apps or websites. Users can also send and receive media files through CometChat, as the platform enables users to sync and share files like GIFs, photos, videos, and audio clips. Support for custom payloads mean users can send calendar invites, or share information like their location or event details to chat participants.Starting Price: $109.00/month -
12
Ably
Ably
Ably is the definitive realtime experience platform. We power more WebSocket connections than any other pub/sub platform, serving over a billion devices monthly. Businesses like HubSpot, NASCAR and Webflow trust us to power their critical applications - reliably, securely and at serious scale. Ably’s products place composable realtime in the hands of developers. Simple APIs and SDKs for every tech stack, enable the creation of a host of live experiences - including chat, collaboration, notifications, broadcast and fan engagement. All powered by our scalable infrastructure.Starting Price: $49.99/month -
13
ApiRTC
Apizee
ApiRTC is a library which allows a developer to easily integrate real-time communications (chat, audio, video) into a web or mobile application. Behind the scenes, the WebRTC technology is used . This means that the media flows are encrypted and exchanged in peer-to-peer when possible. Otherwise a media relay (TURN server) may be required. ApiRTC is the entry point of our platform that will manage all connection establishments for you including user connection, user presence and media establishment. ApiRTC library is available in different format depending of the integration you need; be it for web and hybrid applications based on Javascript or native applications for iOS and Android. For audio and video communications, Apizee solutions are based on the WebRTC standard. The compatibility of Internet browsers with this technology is growing rapidly and this choice now allows the availability of our audio/video streaming solutions in most PC, tablet and smartphone environments.Starting Price: $71 per month -
14
Gupshup
Gupshup
Headquartered in Silicon Valley, Gupshup is a leading conversational messaging platform that enables businesses to build engaging conversational experiences seamlessly across 30+ messaging channels using a single API. Gupshup offers an easy-to-use omnichannel messaging API, advanced bot-building platform and mobile marketing tools. Gupshup's messaging platform handles over 6 billion messages per month enabling over 39,600 businesses send messages to several billion users across popular messaging channels such as SMS, Voice, WhatsApp, Mobile Web, Android RCS, Instagram, Twitter, Telegram, WeChat, FB Messenger, Slack, Viber, Skype and many more. Gupshup's constant innovation enables it to offer market leading features on its platform, enabling developers to build Interactive, Programmable and Rich omni-channel CX journeys across messaging servicesStarting Price: $0.01 -
15
Authkey
Authkey.io
Authkey is a multi-channel CPaaS platform providing SMS API, WhatsApp Business API, Voice API, Email API, and Google RCS. It helps businesses send notifications, promotional messages, transactional messages, OTPs, 2FA, and more. Designed for responsiveness and ease of use, Authkey allows you to start without adding any credit cards. Authkey offers a free sandbox account for building, testing, and deploying. It supports easy-to-integrate APIs for all channels and over 1,000 automation options via Zapier, Pabbly, Integrately, and other partners. You can easily push bulk campaigns through all channels. WhatsApp Chatbot for intelligent customer query responses. Join over 200 active businesses working with us and grow together.Starting Price: $0 -
16
Channelize.io
Channelize.io
Channelize.io is an end-to-end Live Video Commerce enabler that enables E-Commerce Brands globally to add Live Shopping Experiences within their Websites and Mobile Apps. Our Platform can be easily integrated within existing websites and apps with Pre-built integrations for Shopify, WooCommerce, Magento, PrestaShop, Wix and more, and via our API, SDKs, and UI Kits. Channelize.io Live Shopping Platform gives brands the opportunity to leverage the power of Live Selling and Real-time Buyer Engagement to Boost Sales and Enhance their Brand Perception by connecting better with their Buyers and Showcasing their products in manners that lead to Informed, Trusted, and Accelerated Purchases by buyers. Our Platform has shown great results for our customer Brands by increasing Sales by 36%, Boosting Engagement by 5X, and reducing Cart Abandonment by 50%. Please Book a Demo with us to see our Platform in action.Starting Price: $49.00/month -
17
Pusher Channels
Pusher
Pusher Channels is a hosted API which allows you to quickly and easily bring rich realtime features to your apps; from dashboards to gaming, collaborative editing, live maps and more, simplify your stack and simply integrate Pusher’s managed WebSocket connections to build the features your users expect into any web or mobile app. Whenever something changes in your system a single API call to Channels will prompt a WebSocket update so that you can instantly update the UI in your users’ apps. Whether you have one connection or millions, ultra-low latency with automatic fallback means Channels works anywhere. Pusher delivers billions of messages every month across browsers, mobile and IoT with the event-based API. Pusher manages and scales the realtime infrastructure, as a reliable and cost-effective alternative to building, maintaining and scaling in-house, so you can concentrate on your product.Starting Price: $49 -
18
smsmode
smsmode©
Communication Platform As A Service (CPaaS). smsmode© provides complete mobile messaging routing services. SMS, TTS, Google RCS or WhatsApp Business. Connect with your customers around the world via our innovative and powerful tools, with the level of security you need to ensure. smsmode© integrates easily with your existing tools to increase their potential through mobile messaging. Use our REST API, SMPP and plugins to create these custom integrations with your applications, CRM, ERP, and more. Our documentation and our experts will help you to reach your goals! European solution GDPR compliant ISO 27001 & 27701 99.95% SLA Responsability Europe CSR CommitmentStarting Price: €9 per month + 4.40 cts / SMS -
19
Signalmash
Signalmash
Why work with giants like Twilio where your support requests will take forever to get a response? Signalmash is not just a CPaaS provider, we take pride in providing the best possible CPaaS support. Your developers can have a shared Slack channel with our developers for instant support. You can speak to our CEO anytime. Real-time and top-notch support means shorter development cycles and enables you to provide exceptional support to your own customers. SMS services we offer: SMS API SMS CPaaS SMS UCaaS SMS no-code sending platform 10DLC campaign support Short code SMS Toll-free SMS Voice services we offer: Contact center telecoms Voice termination Voice orgination Local numbers Short code numbers Toll-free numbers SIP Trunking Our No-code telecoms solutions: UCaaS to send SMS CCaaS to manage phone calls AI solutions Signalmash - experience the highest level of support, every step of the way - book a call with us to get expert advice!Starting Price: $0 -
20
Infobip
Infobip
Infobip is a global leader in omnichannel engagement powering a broad range of messaging channels, tools and solutions for advanced customer engagement, authentication and security. With over 700 direct carrier connections and 60+ offices on 6 continents, Infobip is the #1 choice of some of the world's biggest companies to scale their customer communications. We help our clients and partners overcome the complexity of consumer communications, grow their business and enhance customer experience, all in a fast, secure and reliable way. With Infobip, you can achieve deeper customer engagement across the widest selection of local and global channels, including: SMS MMS RCS Live Chat WhatsApp Business Apple Messages for Business Facebook Messenger Instagram Business Telegram Viber Voice / VOIP Video Email -
21
TalkJS
TalkJS
TalkJS is a full-featured chat API you can add to your website or mobile app. It comes with a fully featured chat UI and works seamlessly with any language or framework. You can have a chat solution up and running in a matter of hours. Javascript SDK Seamlessly integrate two-way chat with talk.js, our real-time messaging infrastructure and our great UI. Fully featured Everything you want in a messaging app. Reliable and scalable. Real-time, cross-platform synchronization. Ship faster Turn any <div> into a full-fledged messaging app. Up and running in 10 minutes. Works with your framework or programming language Most of your TalkJS code will live in the frontend, which means that it will work seamlessly with any language or framework. This includes React, jQuery, Angular, VueJS, PHP, Laravel, Ruby on Rails, Python, Django, ASP.NET MVC, .NET, Java, NodeJS, and so on.Starting Price: $49.00/month -
22
Bandwidth
Bandwidth.com
You want the best quality voice, messaging, and more. To get them, you need the only API provider with its own nationwide network. You can eliminate the middleman, save on costs, give yourself more control, and build the application that your customers are craving. You’re not new to this, but you need a partner to help you reach the scale you know you’re capable of. Whether you’re bringing your own carrier or building your own solution from the ground up, Bandwidth has the tools you need to reach your maximum potential. Bandwidth is a communications platform with limitless flexibility. You need integrations, enterprise-class APIs, and tools to manage your communications stack intelligently. We are open where you need it the most, with optionality and control. Our global network is directly connected to where it matters most. Giving unmatched reliability. Bringing your customers closer. Scaling wherever your business takes you. -
23
mesibo
mesibo
mesibo is a powerful real-time communication platform to quickly add robust real-time messaging, group chat, voice, and video calls, conferencing into your mobile and web applications. The key objectives while designing mesibo APIs were reliability, performance, and scalability. We have seen APIs as complex as the universe making apps unnecessarily complex and error-prone. We have instead worked hard to make mesibo APIs simple, yet powerful. In this section, we will explore mesibo real-time APIs in detail. It is highly recommended that you also refer to the source code of one of the mesibo sample app in GitHub to learn how APIs are used. This makes it easy for you to write cross-platform code across platform. In the following sections, we will describe APIs with name and parameters. -
24
Sunshine Conversations
Zendesk
The messaging platform for conversational business. Sunshine Conversations lets you unify messages from every channel into a single conversation, and build interactive messaging experiences anywhere. The way we communicate has fundamentally changed. With more than 5 billion accounts worldwide, messaging apps like Facebook Messenger, WhatsApp, and WeChat have made it easy to connect in a more personal way with friends and family from anywhere in the world. Businesses already know they need to be where their customers are. But with the growing number of channels and constantly changing technology, it’s become harder than ever to manage conversations across channels. With the rise of bots, AI, and interactivity in messaging, these channels are quickly evolving from places we chat to places where we do business.Starting Price: $145 per month -
25
Webex Connect
Cisco
An API and low-code Communications Platform as a Service (CPaaS) offering designed to help enterprises lower cost, reduce complexity, and accelerate IT roadmaps. Map and automate customer journeys in minutes using a drag-and-drop editor with powerful building blocks (nodes). Shift to low-code development to reduce the time to market for new applications and journeys. Seamlessly consume events from existing systems to trigger customer communication flows. Integrate customer interactions with backend systems to achieve end-to-end automation. Easily test, deploy, and make iterative changes to flows in a secure and scalable serverless environment. Leverage our extensive portfolio of communication APIs and SDKs for SMS, voice, push, RCS, WhatsApp, video, etc., to engage customers on their preferred channels. -
26
SignalWire
SignalWire
An elastic communications cloud with advanced APIs for voice, SMS and video designed by the original geeks of software-defined telecom. When your audience is large, your brand is premium, and you won't settle for janky video conferencing UX, you want this. Real time, granular control over call flows, routing, and codecs. 300% more responsiveness than you get with REST. If you use AI in your voice apps, you just found your new favorite API. If you're more comfortable with REST than WebSockets or already use TwiML, these APIs are like TwiML...if TwiML suddenly knew Kung Fu. The SMS API makes it easy to move your expensive SMS traffic to SignalWire and cut your billio 50-80% in the process. Launch and scale communication products on infrastructure built for this decade and the next rather than running aground on the limitations of 2010s-era SaaS. Persistent, bi-directional connections between your video and voice apps and our infrastructure means 300% more responsiveness. -
27
Kloudless
Kloudless
SaaS App Integrations Made Fast and Easy. Kloudless is an API integration platform that unifies endpoints and data models across many SaaS APIs so that you can code just once and instantly integrate your app with many SaaS providers. We figured out the ins and outs of 150+ APIs so you don’t have to. We learned how to talk to and maintain over 150+ APIs so that you don't have to. Partner with us to help your app integrate with any SaaS app that your customers want. Our Unified APIs unify endpoints and data models across many SaaS APIs so that you can code once and integrate many. Our Unified APIs abstract away the differences between many SaaS APIs, making it simple to build integrations quickly get new features to market. We offer extra features like real-time activity monitoring and pre-built tools like the File Picker and Crawler that the SaaS provider doesn’t even offer. -
28
8x8 APIs
8x8
Create more engaging customer experiences at scale with SMS, Chat Apps, Video & Voice APIs. Industry standard APIs make it easy to quickly automate notifications. 24/7 customer support ensures expertise is always there when you need it. Reliable delivery provided by our global, carrier-grade platform. Reach your customers anywhere with coverage across 190 countries and 130 network operators. Reliably reach customers anywhere with notifications, one-time passwords, reminders and alerts. Reach more customers with the ability to deliver messages across many different platforms through one API. Live support with the click of a link. Convert text to speech to create tailored, private messages at scale using this API. The Campaign Manager lets you instantly start sending SMS campaigns without integrating an API. Access the online portal, upload approved contacts and start communicating. -
29
voximplant
voximplant
The industry’s true serverless platform for voice, video, and messaging APIs trusted by thousands of developers around the world to innovate and scale real-time communications for businesses of any size. -
30
Nylas
Nylas
Billions of people. Trillions of connections. One API. The Nylas APIs power applications with email, calendar, and contacts sync from any inbox in the world. Only Nylas provides one API for 100% of email, calendar, and contacts integrations. Add missing information in contact records. Make warmer intros with the help of a connection graph. Compile data from each address book to create a unified data source. Straightforward, universal connectivity to lower your costs, save time, and increase developer productivity. Transform data into insights and personalize the user experience. Fuel innovation with unique customer intelligence. Automate digital processes to drive business growth. Streamline user workflows with powerful scheduling automation. Discover how organizations just like yours are driving engagement and increasing customer satisfaction with the Nylas APIs.
