---
title: RCS Messaging | Sendblue Docs
description: Rich Communication Services support on V2 lines
---

Sendblue supports RCS (Rich Communication Services) messaging on V2 lines. RCS provides enhanced messaging features for Android users, similar to iMessage for iOS.

## Service Types

Messages are delivered via one of three services:

| Service    | Description                              |
| ---------- | ---------------------------------------- |
| `iMessage` | Apple’s messaging protocol for iOS/macOS |
| `SMS`      | Standard text messaging fallback         |
| `RCS`      | Rich messaging for Android devices       |

## How RCS Works

When you send a message, Sendblue automatically determines the best delivery method based on the recipient’s device capabilities. The `service` field in message responses and webhooks indicates which protocol was used.

## Filtering Messages by Service

Query messages by service type using the messages endpoint:

Terminal window

```
curl "https://api.sendblue.co/api/v2/messages?service=RCS" \
  -H "sb-api-key-id: YOUR_API_KEY" \
  -H "sb-api-secret-key: YOUR_API_SECRET"
```

## Webhook Payloads

Inbound and outbound message webhooks include the `service` field:

```
{
  "message_handle": "abc123",
  "content": "Hello",
  "from_number": "+19998887777",
  "to_number": "+15551234567",
  "service": "RCS",
  "status": "DELIVERED"
}
```

## RCS Features

RCS messages support:

- Text messages
- Media attachments (images, video, audio)
- Read receipts
- Typing indicators
- Delivery confirmations

## Fallback Behavior

If RCS delivery fails, messages automatically fall back to SMS (when `allow_sms: true`). The `was_downgraded` field indicates if fallback occurred.

## V2 Lines

RCS is available on V2 infrastructure lines. If you’re still on a V1 line, reach out to <support@sendblue.com> to upgrade and enable RCS on your account.