Check RCS Device & Carrier Capabilities Before Sending

Telnyx RCS customers can now make smarter routing decisions for RCS campaigns. Our new RCS Capability Check API lets you verify if a destination number is RCS-capable before sending, whether you’re checking a single number or an entire list in bulk.

Before, businesses had to rely on “send and see” to know if RCS was supported, leading to unnecessary fallback traffic and extra costs. Now, it's easy to identify whether the recipient’s device and carrier support RCS (and which features) in advance, optimizing delivery reliability and reducing wasted sends.

What you can find out with the API:

• ✅ Whether the device is RCS-enabled
• ✅ Whether the carrier supports RCS
• ✅ Which RCS features are available (e.g., rich cards, media, suggested actions)

Users should note that not all carriers or devices reliably surface full capability data, while Google's RCS platform (RBM) has known variability in capability reporting, especially for dynamic states.

Getting started

Telnyx customers can start using this new capability by following our quickstart guide or implementing the API.