Best Communication APIs for Microsoft Outlook

Compare the Top Communication APIs that integrate with Microsoft Outlook as of May 2026

This a list of Communication APIs that integrate with Microsoft Outlook. Use the filters on the left to add additional filters for products that have integrations with Microsoft Outlook. View the products that work with Microsoft Outlook in the table below.

What are Communication APIs for Microsoft Outlook?

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

  • 1
    Digital Samba

    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.
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    Starting Price: €0.0026
  • 2
    ClickSend

    ClickSend

    ClickSend

    ClickSend is a simple, global SMS platform built for developers and the businesses they support. Built on a battle-tested API that always delivers with: - Billions of messages delivered globally - Direct routes only to 190+ countries - 99.95%+ uptime - Lightning-fast delivery - Pay-as-you-go pricing — no lock-ins - 24/7 support from people who actually understand APIs - It works straight out of the box — and keeps working as you scale. Already use Zapier, ActiveCampaign, Make or Power Automate? There are pre-built integrations ready to go. Sign up and send your first message in minutes with free test credits. Perfect for: alerts, 2FA codes, marketing campaigns and transactional messaging.
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    Starting Price: $20 minimum topup
  • 3
    Unipile

    Unipile

    Unipile

    Unipile is a unified API designed to integrate multiple communication channels, messaging, email, calendar, and more, into your software application. It provides over 500 endpoints that enable developers to connect platforms such as LinkedIn, WhatsApp, Instagram, Gmail, Outlook, and IMAP into a single unified inbox. With Unipile, you can send and retrieve messages across channels, manage calendars (Google/Outlook), sync conversations in real time, and maintain full historical context across channels. The API supports functions such as starting chats, retrieving message threads, scheduling events, and connecting profile data, all through the same interface. Use-cases include ATS/CRM software publishers, outreach tools, no-code builders, and AI agent platforms, anywhere multi-channel communication needs to be embedded into an application. Unipile also emphasizes rapid integration, developer-friendly documentation, and live support.
    Starting Price: €49 per month
  • 4
    Kloudless

    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.
  • 5
    Aurinko

    Aurinko

    Aurinko

    Unlock the full potential of your business platforms (CRM, ATS, PM, PRM, LMS) and differentiate your approach to relationship management intelligence with Aurinko’s communications API and robust activity capture and sync solutions. Stay ahead of your roadmap and unlock relationship management insights by leveraging Aurinko's comprehensive suite of offerings, including a powerful communications API, seamless sync logic, and ready-to-integrate Gmail and Outlook add-ons, allowing you to power your core communications features and white-label pre-built solutions. Capture email and calendar activities and add them to CRM records automatically for predicting closed/won opportunities, detecting missing CRM contacts, and suggesting new connections. Sync calendar events, contacts, and tasks bi-directionally to understand key relationships and the level of engagement.
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