Best Communication APIs for Google Calendar

Founded in 2003, Digital Samba is a privacy-first video conferencing company rooted in the European Union — where the world’s strongest data protection standards are set — and trusted by organisations across the globe. Our technology is built around zero tracking, uncompromising security, and long-term reliability. We provide two ways to connect: Digital Samba – a free, ready-to-use platform for meetings, classes, webinars, trainings, and events. Digital Samba Embedded – an API and SDK that lets organisations embed fully customisable, branded video conferencing directly into their own apps and services. Our minimalist design puts usability first, while delivering powerful features like HD video and audio, screen sharing, breakout rooms, whiteboards, polling, Q&A, AI captions and summaries, and secure cloud recordings. For developers and enterprises, advanced options such as full white labelling, CNAME domains, API control, and webhooks provide seamless integration and complete branding freedom. Backed by 99.99% uptime, intelligent bandwidth management, and enterprise-grade safeguards like E2EE, anonymised IDs, token-based authentication, and TLS encryption, Digital Samba is built for critical communications. From healthcare and education to international events like Eurovision, we deliver scalable, secure, and user-friendly video conferencing — without compromise.

ClickSend: A simple, battle-tested SMS API built for developers. Ship messaging features in minutes with a clean API, reliable infrastructure and zero lock-ins. Why devs and sysadmins trust us: - Direct carrier routes to 190+ countries — no middleman - 99.95%+ uptime, low latency, high throughput - Billions of messages delivered globally - Pay-as-you-go pricing — no contracts - 24/7 support from people who actually understand APIs Works the way you code: Integrate via REST API, use pre-built SDKs (PHP, Python, Ruby, Node.js, C#), or trigger via webhooks. Already using Zapier, Make, or Power Automate? We've got you covered with pre-built integrations ready to go. It works straight out of the box — and keeps working when you scale from 100 to 100 million messages. No lock-ins. No fuss. Just reliable SMS infrastructure you can trust. Perfect for: 2FA, alerts, monitoring notifications, transactional messaging, user onboarding flows and anything else that needs to reach people fast.

Unipile serves as a consolidated API that facilitates the integration of various communication methods, including messaging, email, calendar functionalities, and more, into your software solutions. It boasts an extensive array of over 500 endpoints, allowing developers to unify platforms like LinkedIn, WhatsApp, Instagram, Gmail, Outlook, and IMAP into a cohesive inbox. With the capabilities of Unipile, users can effortlessly send and receive messages across different channels, handle calendars for both Google and Outlook, sync conversations in real time, and keep a complete historical context of interactions across all platforms. This API encompasses features such as initiating chats, accessing message threads, organizing events, and linking profile information, all through a single interface. Potential applications include software for ATS/CRM, outreach tools, no-code platforms, and AI agent services, making it ideal for any scenario requiring multi-channel communication integration. Additionally, Unipile prioritizes quick integration, provides user-friendly documentation for developers, and offers live support to assist users effectively. Its versatility makes it a valuable tool for enhancing communication within various applications.

Crafting Customer Journeys Through Meaningful Conversations. Delivering compelling experiences that align with your customers' needs. Favored by developers and designed for enterprises. Vonage Communications APIs (previously known as Nexmo) empowers emerging startups and nimble organizations to elevate customer interactions and achieve significant business results at scale. With our user-friendly APIs, comprehensive global platform, and dedicated support, you can simplify communication complexities and drive innovation at a quicker pace. Rethink voice communication to transform how your customers engage with your brand. Each message can become a pivotal moment for both your customers and your organization. Advance security and privacy measures while providing smooth login experiences. Develop contemporary, high-quality voice applications hosted in the cloud. Effortlessly send and receive SMS messages in nearly every nation worldwide. Access real-time insights on any phone number across the globe. Initiate and receive calls using your current VoIP system, all from the cloud, ensuring flexibility and efficiency. This holistic approach not only enhances user engagement but also fosters long-term relationships with your audience.