SMS API 4

Conversational engagement platform for businesses to connect with customers across multiple channels.
Gupshup is a conversational engagement platform that empowers businesses to engage meaningfully with customers across commerce, marketing, and support use-cases on 30+ channels. It provides tools for building AI-powered chatbots, managing multi-channel messaging, and automating customer interactions to maximize customer lifetime value and reduce the cost of service.

OTP & SMS verification API for developers with anti-spam and AI-powered routing.
Prelude is a platform that offers OTP & SMS verification API built for developers. It provides phone verification for exponential growth, allowing users to send verification messages anywhere in the world with the best prices, top deliverability, and zero spam. Prelude's API includes anti-spam features and AI-powered routing across 30+ carriers for cost-effective, reliable delivery. It helps improve onboarding KPIs, lower costs, increase user verification success, and block fraud.

API-based voice and SMS platform for communication, data capture, AI analysis, and CRM integration.
Callr is an API-based voice and SMS platform that seamlessly integrates into your product, enabling powerful communication, data capture, AI analysis, and CRM integration. It allows turning conversations into actionable data.

Omnichannel customer engagement platform for streamlined support and communication.
klink.cloud is an omnichannel customer engagement platform that streamlines customer support by integrating voice and non-voice communication channels, such as in-app calls, social media messaging, email, and SMS. It offers a unified CX platform with features like omnichannel contact center, telephony, AI & workflow automation, and transactional chatbots.