Best Communication APIs of 2025 - Reviews & Comparison

Compare the Top Communication APIs as of October 2025

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What are Communication APIs?

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 currently available using the table below. This list is updated regularly.

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.

1,029 Ratings

Starting Price: $0.0079 per message

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2

Sendbird

Sendbird

Sendbird is the omnichannel AI agent platform enterprises choose to elevate customer experience, by initiating autonomous support & sales conversations, keeping humans in the loop for complex inquiries, and re-engaging customers with proactive business messages. Combining omnichannel AI and a battle-tested, award-winning communication APIs, Sendbird enables businesses to build AI agents and meaningful customer connections at scale. Sendbird’s AI-powered customer service platform helps businesses deliver scalable, omnichannel support through intelligent AI agents. These agents work seamlessly across channels like mobile apps, web, SMS, and social media, providing instant and proactive assistance to customers 24/7. With the ability to integrate into existing customer support tools, the platform enhances resolution rates, reduces response times, and improves customer experience by offering a unified view of all interactions.

139 Ratings

Starting Price: $399/month

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3

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.

1,312 Ratings

Starting Price: $0.0085 per min

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4

Notifyre

Notifyre

Elevate your business communications with Notifyre's secure SMS and fax solutions. We're ISO 27001 certified and fully HIPAA compliant, providing BAA's, user access controls and audit trails and more security features. Benefit from flexible pay-as-you-go fax & SMS and outstanding value receive fax plans. Fax service features include: - Online Fax Platform - Email to Fax and Fax to Email - Fax API -Online Fax Numbers -Fax Number Porting -Fax Broadcast Text messaging service features include: - 10DLC Registration -> Book a Demo for one-on-one guidance! - SMS Online, Email to SMS, SMS API - Mass Text Messaging & SMS Marketing - Subscriber Management Tools - Bulk Upload Contacts to Address Book - Create SMS Templates & Personalization Fields Outstanding value and 5-star service. Our dedicated team are here to help. We are 100% committed to providing the very best service.

45 Ratings

Starting Price: 2¢/SMS part; 3¢/fax page (USD)

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5

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!

1 Rating

Starting Price: $0

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6

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.

73 Ratings

Starting Price: $20 minimum topup

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7

MirrorFly

CONTUS TECH

MirrorFly is a CPaaS platform that empowers businesses and enterprises to add real-time chat features into their existing applications and websites. MirrorFly CPaaS offers text, voice, video, and broadcasting in an enterprise-grade infrastructure. Startups and large enterprises can build their own chat app with extensive customization and branding capabilities to add logos, brand color, and other brand elements. The self-hosted Chat APIs and SDKs offer 1000+ in-app messaging features with 100% customization. In addition, MirrorFly offers a dedicated developer team to support the end-to-end custom chat app development process. MirrorFly Readymade SDKs: 1. In-app Chat API 2. HD Video Call Solution 3. HQ Voice Call SDK 4. Self-hosted Chat Messaging Solution 5. SIP & VoIP Call Solution 6. Flutter Flow Software 7. Activity Feeds Solution 8. Call Broadcasting 9. Video Conferencing API 10. Video KYC Solution 11. Live Streaming SDK

47 Ratings

Starting Price: $299 per month

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8

Digital Samba

Digital Samba

Founded in 2003, Digital Samba is a privacy-first video conferencing provider operating from within the European Union — home to the world's strongest data protection laws — and serving a global audience. Our solutions are designed with zero tracking, robust security, and long-term reliability at their core. We offer both a free, ready-to-use platform for meetings, education, webinars, training, and events, as well as Digital Samba Embedded, an API and SDK that enables organisations to integrate fully customisable, branded video conferencing directly into their own applications. Digital Samba combines minimalist design with powerful features, including HD video and audio, screen sharing, breakout rooms, interactive whiteboards, AI captions and summaries, polling, Q&A, and secure cloud recordings. For developers and enterprises, advanced options such as full white labelling, CNAME support, API control, and webhooks make deep integration seamless.

8 Ratings

Starting Price: €0.0026

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9

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.

8 Ratings

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10

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.

7 Ratings

Starting Price: $0/Month

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11

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.

1 Rating

Starting Price: €50/ month (Pay as YouGo)

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12

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.

1 Rating

Starting Price: $10.00/one-time

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13

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.

1 Rating

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14

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.

2 Ratings

Starting Price: $45 per month

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15

PubNub

PubNub

Innovate with Realtime Features: We take care of realtime communication infrastructure so you can focus on your app. Our Platform for Realtime Communication: A platform to build and operate real-time interactivity for web, mobile, AI/ML, IoT, and Edge computing applications Faster & Easier Deployments: SDK support for 50+ mobile, web, server, and IoT environments (PubNub and community supported) and more than 65 pre-built integrations with external and third-party APIs to give developers the features they need regardless of programming language or tech stack. Scalability: The industry’s most scalable platform capable of supporting millions of concurrent users and allows for rapid growth with low latency, high uptime, and without financial penalties. Security & Compliance: Enterprise-grade security and compliance with the most stringent regulations worldwide, including GDPR, SOC 2, HIPAA, ISO 27001, and CCPA.

Starting Price: $0

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16

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 services

Starting Price: $0.01

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17

Twilio Voice

Twilio

Create a scalable voice experience with the API that connects millions globally. With Twilio Voice, you can build unique phone call experiences with one API, to create, receive, control and monitor calls with just a few lines of code. Create an engaging voice experience that you can quickly scale and modify with a wide array of customization options and resources, like our Voice SDK. Then, add on features like Interactive Voice Response (IVR), recording transcriptions, and speech recognition to create an experience that your customers will appreciate. Whether you're looking to set up global conferencing or alerts & notifications, Twilio has the support you need for building with Voice. Find docs, code samples, helper libraries, and developer tools such as Twilio Runtime and our visual workflow builder, Studio.

Starting Price: $0.0085 per min

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18

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

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19

Dyte

Dyte

Dyte's Video SDK and APIs are SOC 2, GDPR and HIPAA complaint. That lets you embed scalable, customisable and interactive video calls within minutes into your Web, Desktop or mobile apps. Collaborate efficiently with HD video, chat, screen sharing, whiteboard, emoji reactions, file sharing and everything a user packaged within one SDK. Dyte's Video Conferencing SDK & APIs are comfortable with React JS, Angular, JavascriptMobile: Flutter, Kotlin, Swift, React Native, Android, iOSDesktop, Electron. With an uptime of 99.99%, industry-leading documentation and out of the box plugins, customize the video experience for your ed-tech, tele-health, fitness, HR-tech, social or gaming platform. Use Dyte's SDKs to build fully custom video experiences powered by a robust infrastructure. With our out-of-the-box chat, plug-ins, recording, and several useful features, Dyte is an all-in-one SDK to help you take video collaboration to the next level. Dyte offers 10K free credits each month

Starting Price: $0

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20

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

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21

Video SDK

videosdk.live

Saving your time in building UI and features for your video calling application. With just 5 lines of code, you'll be able to integrate video calls into your application. Generate API Key to eastablish connection in-between your app to Video SDK. It enables end-to-end secure connection in-between your app and our servers. Install the simple JavaScript code in your website. In just few lines of code, you can build interactive video calling app. Analytics Dashboard will help you to monitor all the usage of services and also provide manual operations control. Everthing you need to build custom and branded live shopping experiences for eCommerce brands at any scale. Everthing you need to build custom and branded highly secure telemedicine communication APIs and SDKs at any scale.

Starting Price: $0.6 per min

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22

ZEGOCLOUD

ZEGOCLOUD

Embed engaging real-time voice, video, and in-app chat experiences into your apps with ZEGOCLOUD's communications APIs. Get started with 4 lines of code and enable enriched interactions with more features. Use our voice, video, and in-app chat SDKs to develop the exact communication features your users need to connect, share, and interact with each other anytime, anywhere. Liven up the interactions and elevate the vibes for your users with a rich set of add-ons, including emotionally responsive avatars, AI-powered video effects, whiteboards, and more. Monitor the quality of communications in real-time and gain insights into your user experience with our powerful monitoring and analytics tools, so you can respond to any issues swiftly and improve your services continuously. ZEGOCLOUD's social solutions help you build 1-on-1 and group video calls, live audio rooms, and social live streaming into your apps to help your users connect and have fun together.

Starting Price: $0.59 per 1000 minutes

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23

Robin

Robin

Build any chat use case into your product with just a few lines of code. Choose from our library of SDKs for chat spanning across web and mobile. A single line of code sets up a secure connection to our service. Develop your UI elements with our SDKs to build the features you need. We have done the hard work, so you never have to. Robin’s Chat SDKs are ready-to-use, secure, and scalable. Our solution was built with scale in mind. With Robin, you can build the chat experience of your dream. Deliver a chat experience that your customers will love. Robin uses 256-bit AES encryption at rest with TLS 1.2 for encrypting data in transit. Ready-to-use kit for Robin Chat with every page, component, and interaction. Integrate Robin into any application in ample time. It’s that simple. Quickly build a reliable & functional chat experience into your mobile or web app project today. Add DM functionality to your product with ease.

Starting Price: $99 per month

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24

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 Commitment

Starting Price: €9 per month + 4.40 cts / SMS

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25

Sceyt

Sceyt

Fast, reliable chat features - deployed swiftly, enhancing engagement and user connectivity. Sceyt’s unique binary messaging protocol is like an express lane for your messages. Combining Protobuf and Websockets technology results in super low-latency. Conversations flow smoothly and responses are near-instant. Whether you want to offer financial advice, connect users with healthcare professionals, or provide ecommerce customer service, Sceyt is versatile enough to handle all your app chat use cases. Sceyt gives you a control room to manage your chat features. The easy-to-use dashboard lets you assign different permissions to team members. In-depth stats give you a bird’s eye view of user interaction. Plus, a range of moderation tools make sure your app remains a safe space for users.

Starting Price: $59 per month

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26

Agora

Agora.io

The Real-Time Engagement Platform for meaningful human connections. People engage longer when they see, hear, and interact with each other. With Agora, you can embed vivid voice and video in any application, on any device, anywhere. Agora provides the SDKs and building blocks to enable a wide range of real-time engagement possibilities. Our network monitors activity in real time and automatically selects the most efficient routing path for sub-second latency globally across 200+ data centers. Compatible with all popular development platforms and mobile-device friendly with minimal battery consumption. Architected to withstand sudden spikes in traffic, gracefully scaling from one to millions of concurrent users as your business demands. Developers can create unique experiences with our extensive APIs, customizable UI and pre-integrated third-party extensions. Deliver the best quality real-time voice and video to your users with ultra-low latency and intelligent routing.

Starting Price: $0.0265 per minute

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27

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

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28

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.

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29

TeleSign

TeleSign

Deliver timely, personalized information through global SMS/RCS and voice cloud communications. Gain a deeper understanding of your customers from actionable global phone number and subscriber data intelligence. Code once and message your customers at scale using TeleSign’s Messaging API - complete with waterfall delivery between channels. TeleSign Messaging API includes SMS, RCS, and WhatsApp to help you build secure digital communications that connect you with your customers anywhere in the world. Integrate a single Messaging API and start sending reliable, secure SMS, RCS and WhatsApp messages to your customers today. Choose one or all three channels to broaden your programmable messaging strategy and expand your audience. Reach more customers with 120+ optimized points-of-presence and 700+ direct-to-carrier routes.

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30

ChatCamp

ChatCamp

Realtime Chat SDK and Messaging API for Apps & Websites. Integrate in-app messaging in your mobile apps & websites using ChatCamp platform. Product architecture to scale infrastructure on the go. Perfected for handling thousands of users at a time. We use world class infrastructure of Google Cloud Platform to provide most reliable service. We follow best practices of the industry to insure data security and privacy. Focus on building your application. No need to worry about building chat from scratch. We have got you covered. Use our chat SDK and messaging API to build a fully functional chat application. Android, iOS, Javascript and Platform API.

Starting Price: $199 per month

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