Instant messaging app for organizations
Microsoft messaging app for organizations
Receive and send messages through messengers
Chat for communities, friends, and gaming
Build real-time chat, voice, and video apps
Messaging app for smartphones
Messaging and calling app
Instant messaging service that connects to the Facebook database
Conversational marketing and sales messaging
Business to customer messaging
Email Delivery, API, Marketing Service

A cloud-based delivery service for transactional emails
Amazon Simple Email Service (SES) for bulk email sending
Google's web-based email service
Transactional Email and SMS Service
Transactional email API service for developers
Email delivery service for marketing & developer teams
A Mailchimp add-on for one-to-one transactional emails
Customer engagement service for email, push, and SMS
Email delivery service for transactional and marketing emails

Standard communication protocol for email transmission
Email sending and deliverability platform
Communication APIS for messaging, voice, video, and data

Communication APIs for Africa
Communication APIs for SMS and voice

Global messaging provider
Voice & messaging APIs

SMS, messaging, voice, video & verification APIs
Telecom APIs for Voice, Messaging and Fax
Business phone, VoIP, and communication APIs
Notification service for sending data to apps on Apple devices
APIs for push, SMS, and email
Push notification service
Firebase Cloud Messaging, cross-platform messaging solution
Customer engagement service for email, push, and SMS
Push notifications for Android and iOS apps

Share text and images between devices
Share notifications between devices
Realtime communication between servers, apps and devices
HTTP callbacks for event notification
Automate workflow to trigger a multi-channel notification with Courier

Use webhooks to integrate with any system or provider
Marketing focused push notifications
Open-source programming language
Object-oriented programming language

JavaScript runtime built on Chrome's V8 engine
Server-side scripting language
Object-oriented, high-level programming language
Dynamic, object-oriented programming language

Object-oriented and type-safe programming language
Client-side SDK enabling direct calls to Courier from JavaScript code
Mobile operating system developed by Apple

Mobile operating system developed by Google
JavaScript library for building user interfaces for mobile
Google's UI toolkit for building natively compiled apps

Multi-paradigm, high-level, general-purpose programming language
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