The most reliable RCS Messaging API

Send interactive and rich content messages via our RCS Messaging API. Built for fast integration by developers, our RCS Messaging API is backed by the global scale of the Esendex family. No sales talk, just maximum reliability.

RCS API



We know speed dictates your development roadmap. That is why we keep onboarding and integration times as short as possible. You just want to connect to the RCS messaging API and start sending, so we get out of your way.

  • Up and running in minutes: Sign up for a free trial and send your first RCS test message right away.¹
  • Ready to go in 30 minutes: Set up your pre-pay account, complete the verification process, and start sending.²
  • Live in 3 hours on average: The typical time it takes to go from initial account setup to a successful connection.³

    Want to see how this works in practice? Watch our 5-minute challenge video 5 min challenge video to see exactly how to get started.

¹ Our fastest time for a pre-pay account, including setup and verification.

² Our fastest integration time starting from a free trial sign-up.

³ Based on the average time for new pre-pay accounts to go from setup and verification to the first message sent via the API (measured from 03/2025 to 05/2026).

No complex workarounds or vague frameworks. With our REST RCS API, you can set up a stable connection in no time. Just create an account, generate your API key, and start building directly in your preferred programming language.

We keep integration straightforward. Get up and running fast using our SDKs, plugins, and clean code samples across multiple languages.