SMS Messaging API

Send text messages to one or multiple recipients. Please read API General Reference before reading this document.

Effortlessly send verification codes, transactional, and promotional messages to one or multiple recipients in any country worldwide. The interface offers a concise, flexible, yet comprehensive parameter input method to meet various SMS usage scenarios.

If you plan to send SMS verification codes to users via Unimatrix, we recommend using our more integrated Send OTP API, which will improve your development efficiency and user experience.

Definitions

Action: sms.message.send
HTTP Method: POST
Content-Type: application/json

Request Parameters

Name	Type	Required	Description	Example
to	string \| string[]	Yes	Recipient's phone number. Using E.164 format.	+12068800123
signature	string	No	SMS sender name. Must between 2-16 characters.	Unimatrix
text	string	No	Full text of the SMS. * Either `templateId`, `text` or `content` is required	701522 is your verification code, valid for 10 minutes.
content	string	No	Main content of the SMS, will be combined with signature as the full text of the SMS. * Either `templateId`, `text` or `content` is required	701522 is your verification code, valid for 10 minutes.
templateId	string	No	SMS template ID or custom template code. * Either `templateId`, `text` or `content` is required	pub_verif_en_ttl
templateData	JSON	No	Template variables, used with `templateId`.	`{"code": "701522", "ttl": "10"}`

Request Example

curl -X POST 'https://api.unimtx.com/?action=sms.message.send&accessKeyId=YOUR_ACCESS_KEY_ID' \
-H 'Content-Type: application/json' \
-d '{
  "to": "+12068800xxx",
  "text": "Your verification code is 204806."
}'

Response Parameters

Name	Type	Description	Example
code	string	Return code	0
message	string	Return message	Success
data	JSON	Results

Results `data`

Name	Type	Description	Example
recipients	integer	Number of recipients	1
messageCount	integer	Total number of billing messages	1
currency	string	Currency	USD
totalAmount	string	Total consumption amount	0.045000
messages	JSON[]	Sent messages details

Messages `data.messages`

Name	Type	Description	Example
id	string	Message ID	c9159d19f394833327e43c8e7285a6b3
to	string	Recipient's phone number (E.164)	+12068800123
iso	string	Country code (iso2)	US
cc	string	Country code (International call prefix)	1
parts	integer	Number of message parts	1
price	string	Consumption amount	0.008500

Response Examples

Successful response example

Status Code: 200, Response Body:

{
  "code": "0",
  "message": "Success",
  "data": {
    "recipients": 1,
    "messageCount": 1,
    "totalAmount": "0.008500",
    "messages": [
      {
        "id": "c9159d19f394833327e43c8e7285a6b3",
        "to": "+12068800123",
        "iso": "US",
        "cc": "1",
        "parts": 1,
        "price": "0.008500"
      }
    ]
  }
}

Failure response example

Status Code: 400, Response Body:

{
  "code": "105400",
  "message": "InsufficientFunds"
}