---
title: Automatic SMS and MMS Fallback for RCS | Telnyx
canonical: https://telnyx.com/release-notes/RCS-fallback
---
# Automatic SMS and MMS Fallback for RCS | Telnyx

[Release notes](https://telnyx.com/release-notes)

# Automatic SMS & MMS Fallback for RCS

### 3, Jul 2025

We’ve added SMS & MMS fallback support for [RCS messages](https://telnyx.com/products/rcs) in the Telnyx Messaging API. When RCS isn’t available on the recipient’s device or carrier, your message will still be delivered via the fallback channel you define.

### How will this help Telnyx users

Reliability is king in messaging. This feature ensures your RCS-first campaigns don’t hit dead ends, you maintain full coverage without manually rerouting traffic.

### How it works

Add fallback objects to your RCS send request:

"sms\_fallback": { "sms\_fallback": { "from": "+13125551234", "text": "Hello world!" }, "mms\_fallback": { "from": "+13125551234", "subject": "Test Message", "media\_urls": \["[http://example.com/some\_media.jpg"\]](http://example.com/some%5Fmedia.jpg%22%5D), "text": "Hello world!" }

### Getting started

Start improving the reliability and coverage of your RCS workflows [via our API](https://developers.telnyx.com/api/messaging/send-an-rcs-message).

[Start building](https://telnyx.com/sign-up)

### Ask AI

* [![GPT](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/chatgpt_icon-ea55e09d.jpeg?width=92&format=webp)](https://chat.openai.com/?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Claude](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/claude_icon-c7c8eef3.webp?width=92&format=webp)](https://claude.ai/new?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Perplexity](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/perplexity_icon-cd5b74f1.webp?width=92&format=webp)](https://www.perplexity.ai/search?q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Gemini](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/gemini_icon-4ff1cbf4.webp?width=92&format=webp)](https://www.google.com/search?udm=50&aep=11&q=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)
* [![Grok](https://d2efw2akbx8gaf.cloudfront.net/https://dotcom-payload-assets-prod.s3.us-east-1.amazonaws.com/cms-media/grok_icon-e588e5bd.webp?width=92&format=webp)](https://x.com/i/grok?text=What makes Telnyx's global network different, breakdown call quality for normal phone calls and voice AI calls.)