SendAPI

Create a better customer experience with SMS, Chat Apps, Video Interaction & Voice. It’s integrated communications platform as a service (CPaaS) streamlines multiple communications channels into a single dashboard.

It is a business mobile messaging service provider that enables businesses of all sizes and industries to deliver and manage SMS text messages from PC, web, email or API.

Multichannel messaging SaaS to manage SMS, Email and RCS from a single interface. Supports transactional and marketing messaging, automation workflows, OTP authentication and API-based integrations.

Twilio offers developers a powerful API for phone services to make and receive phone calls, and send and receive text messages. Their product allows programmers to more easily integrate various communication methods into their software and programs.

Nexmo connects your apps directly to carriers around the world. Integrate SMS and Voice messages using one simple API. Use Nexmo Verity to register users, verify transactions, and implement two factor authentication.

Postscript lets you easily create and manage SMS marketing campaigns with detailed analytics designed to increase sales and revenue, not just clicks.

This API allows you to build your own customized Telegram clients. It is 100% open for all developers who wish to create Telegram applications on our platform.

Braze is a comprehensive customer engagement platform that powers relevant and memorable experiences between consumers and the brands they love.

Agora.io provides building blocks for you to add real-time voice and video communications through a simple and powerful SDK. You can integrate the Agora SDK to enable real-time communications in your own application quickly.

It is a cross-platform mail client library built on top of MimeKit. The main goal of this project is to provide the .NET world with robust, fully featured and RFC-compliant SMTP, POP3, and IMAP client implementations.

As soon as a mailbox is connected, we create a metadata index of its content starting from the most recent emails which become available from the API within seconds. Context.IO takes care of synching email data for your app so you don't have to build, scale and maintain this infrastructure yourself. Focus on what's unique to your business, we'll manage the technical details of integrating with arcane email server protocols.

Plivo provides basic building block APIs in the form of Plivo XML and HTTP API, to create telephony apps, so developers can completely do away with learning the nitty-gritty of the telephony plumbing.

At MessageBird we believe that communicating with a business should feel as natural as communicating with a friend. That's why our SMS, Voice and Conversations APIs continue to revolutionize company-customer interactions.

It adds the clarity and emotion of face-to-face communication to your brand whether you're developing for the web, iOS, or Android. We make the integration of high-quality live video a breeze so that you can focus on building a great product.

A full-featured email creation and transfer class for PHP. It is a class library for PHP that provides a collection of functions to build and send email messages. PHPMailer supports several ways of sending email: mail() , Sendmail, qmail & direct to SMTP servers.

It is a global leader in omnichannel engagement. We help our clients and partners overcome the complexity of consumer communications & grow their business.

Access WeChat’s 300 million users and make your app a global phenomenon.

A Communications Platform as a Service company offering a full suite of voice, messaging, and 9-1-1 APIs, all built atop the company's own all-IP voice network.

It allows sending email directly from Javascript, with no backend development. The developers create one or more email templates (dynamic content supported) and then trigger an email using our Javascript SDK, specifying the template, and the dynamic parameters for rendering the email.

BulkSMS.com is a leading SMS messaging service provider offering two-way SMS communication services. The BulkSMS gateway reaches across borders and connects to over 800 mobile network operators world-wide.

It is a cloud communication platform offering powerful messaging solutions to empower business communications. It provides bulk SMS service provider offers transactional & promotional bulk SMS solutions to enterprises via powerful & robust bulk SMS gateway internationally.

Tropo is a powerful yet simple API that adds Voice and SMS support to the programming languages you already know.

It is a cloud telephony platform that powers communication for enterprises, startups and small and medium enterprises in India and Southeast Asia. They provide APIs that help companies devise their own communication flow.

Experience the power of advanced AI with AskGreekAI - Your intelligent assistant for chat with real time info, image generation, and more.

It gives powers to chat commerce by helping you reach and engage customers through SMS, WhatsApp and other social channels.

VoxImplant is a communications cloud platform built and designed for developers. Use the VoxImplant mobile SDK, telephony integration, or web sdk to build anything from softphones, click-to-call, automated surveys, cloud contact center or PBX, to cloud IVR and call tracking.

Reach your customers in a matter of minutes with our instant delivery. Find a Bulk SMS API for every application/technology.

TapTalk.io is a complete in-app chat SDK and messaging API. It designed to be easy to implement and give your user the best in-app chat experience. We provide you customizable UI based implementation and code based implementation.

mailparser.io is a web-based email processing software which allows you to pull any kind of data from incoming e-mails based on custom parsing rules. The parsed data can be sent to any API with webhooks.

It is a smart messaging platform which enables businesses to build engaging conversational experiences seamlessly across 30+ messaging channels using a single API. It offers a comprehensive product portfolio that includes an easy to use omni-channel messaging API, advanced bot building platform and mobile marketing tools

Pushnami enables you to capture your audience, intelligently market to them across web, mobile, and email, and grow your revenue. Streamline your messaging strategy with features like machine learning,automated drip campaigns, and customize

Send and receive SMS globally with the SMS gateway. Trust your business messaging with reliable, direct routes, and lightning fast message delivery.

It is an Open Source, low-latency and high-quality voice-chat program written on top of Qt and Opus. There are two modules in Mumble; the client (mumble) and the server (murmur). The client works on Windows, Linux, FreeBSD and macOS, while the server should work on anything Qt can be installed on.

Add In-App User-to-User Communication into Mobile Apps & Websites, with rich & engaging Text Chat, Video, and Audio Calling experiences, to Increase User Engagement and Enable new Revenue Streams.

Add video and audio chat to any app, in minutes. Daily's APIs help developers build the best possible video experiences, quickly and easily. Use our Prebuilt UI or build completely custom video conferencing interfaces.

Quickly add Voice, Video, SMS to your web and mobile applications. It is a communication platform which provides APIs that help clients quickly add Voice/Video/SMS to any application.

It is an API-first email hosting service with a user-friendly interface. It provides affordable scalability for small & large businesses using dedicated email servers without any per-user/per-domain limits. Furthermore, the powerful API enables you to meet your changing business requirements with ease.

BChat is a decentralized, privacy-focused messaging app designed for secure communication without requiring phone numbers or email addresses. It uses end-to-end encryption and a distributed node network to minimize metadata exposure while enabling anonymous, reliable messaging.

Voice broadcasting and text messaging with Call-Em-All's automated messaging service for groups and organizations of all sizes.

Get form submissions on WhatsApp instantly.

Sidemail is an all-in-one email delivery platform for startups that makes sending emails simple. It has everything for delivering and managing emails – email API, transactional emails, email marketing and automation, contact management, no-code email editor, email templates, subscribe forms, and more. Perfect for teams & developers that want reliable deliverability without the bloat. We're based in the EU and GDPR compliant.

AI receptionist that answers calls 24/7, books appointments, and handles customer inquiries. Trusted by 2,500+ businesses across 11 industries. Try free today.

Sherlock Calls is a Slack-native call detective for voice operations teams. When a call fails, evidence is scattered across Twilio call events, ElevenLabs audio and TTS behaviour, webhooks, and CRM records. Sherlock connects to a team's stack via OAuth, correlates provider data, and posts a structured incident case file in Slack: a timestamped cross-provider timeline, root cause hypothesis with evidence, and first checks in triage order. Primary use cases: failure spike investigation, root cause analysis for dropped or timed-out calls, latency attribution, webhook delivery failure detection, transfer and escalation failure forensics.

Revolutionary SMS Platform that Has Proven to Deliver 10x Better Results than a Traditional Email Auto-Responder. It is the Most Powerful SMS Platform For creating and managing text message campaigns with your subscribers and customers

It is a sales productivity phone service that makes all of your calls searchable, trackable, and archived in your CRM sales.

It is ‪a chat API and SDK that enables users to build chat messaging functionality into their apps or websites within minutes, saving them months of development time.‬

The chat script will integrate seamlessly with your existing user database, even on a custom website. Free web chats room plugin online for video calling.

It is a plug and play app, to send & receive, single or bulk SMS, MMS , WhatsApp, Telegram & CTI from salesforce.

It is a perfect communication platform that enables businesses to connect, engage and interact with their users with help of its SMS, Voice and APIs.

It can parse emails which contain travel reservations and return those reservations in a structured format (JSON). We can extract travel itineraries from virtually any travel provider. We support thousands of email formats and we have a dedicated team of developers who constantly work on improving the API by adding new parsers to support new email formats.