RCS Inbox REST API
RCS Inbox REST API for SMSGatewayCenter APIs
RCS Inbox REST API
Use the Inbox REST API to fetch incoming RCS messages for your account over HTTP. Filter by bot, mobile number, and date range. This endpoint is read-only, accepts GET requests, and returns JSON.
API Endpoint
https://unify.smsgateway.center/rest/rcs/v1/inboxLegacy alias without v1 in the path is also supported: /rest/rcs/inbox
Authentication
Send your account userid with either password as a request parameter, or your account API key in the apikey request header. userid is required in both cases. Password is not required when the apikey header is used. RCS product and RCS API access must be enabled on your account. Do not publish live usernames or passwords.
| Parameter | Required | Description | Example/Value |
|---|---|---|---|
| Authentication | |||
| userid | Yes | Your SMSGatewayCenter account username. Required even when the apikey header is used. | YourUsername |
| password | Yes* | Your account password. Not required when the apikey header is used. | ********** |
| output | Yes | Response format. Must be json. | json |
| Optional Parameters | |||
| action | Optional | Defaults to list. Only list is supported in v1. | list |
| fromDate | Optional | Start of received date range. Format YYYY-MM-DD or full date/time. Alias: from. | 2026-07-14 |
| toDate | Optional | End of received date range. Format YYYY-MM-DD or full date/time. Alias: to. | 2026-07-14 |
| mobileNo | Optional | Filter by sender mobile number with country code, digits only (5-20 digits). | 919876543210 |
| botId | Optional | Filter by numeric RCS bot id. | 3 |
| page | Optional | Page number. Default 1. | 1 |
| limit | Optional | Records per page. Default 50, maximum 200. | 50 |
Sample Request (cURL)
curl --location 'https://unify.smsgateway.center/rest/rcs/v1/inbox?userid=YourUsername&password=xxxxx&output=json&action=list&fromDate=2026-07-14&toDate=2026-07-14&page=1&limit=50'
Sample Request - API Key Header (cURL)
curl --location --get 'https://unify.smsgateway.center/rest/rcs/v1/inbox' \
--header 'apikey: YourApiKey' \
--data-urlencode 'userid=YourUsername' \
--data-urlencode 'output=json' \
--data-urlencode 'action=list' \
--data-urlencode 'mobileNo=919876543210' \
--data-urlencode 'page=1' \
--data-urlencode 'limit=50'
Sample Success Response
{
"status": "success",
"inboxList": [
{
"incomingId": "451",
"botId": 3,
"mobileNo": "919876543210",
"msgId": "abc-123",
"type": "text",
"typeLabel": "FREE TEXT",
"message": "Hi, is my order shipped?",
"receivedAt": 1752480000000,
"receivedAtFormatted": "2026-07-14 10:00:00"
}
],
"totalRecords": 1,
"page": 1,
"limit": 50,
"fromDate": "2026-07-14 00:00:00",
"toDate": "2026-07-14 23:59:59",
"statusCode": "200",
"reason": "success"
}
Sample Error Response
{
"status": "error",
"inboxList": [],
"statusCode": "403",
"reason": "RCS API access is not enabled for this account."
}
Notes
- Results are newest first.
- This API is read-only. To reply, use the Send RCS Message API.
Testimonials
