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Webhooks (v2)

Send Message to group

Send a message to all contacts of a contact group in one request. The response contains a messageid for the group send, which you can use to track the send afterwards via Get message by ID (GET /v1/message/{messageid}).

Base URL:

POST: https://api.smsgatewayapi.com/v1/message/send
ParameterInputDescription
client_idAPI client IDLogin and go to 'Developer' - 'API & Webhooks' - 'API-credentials' to find the API keys
Required
client_secretAPI client secretLogin and go to 'Developer' - 'API & Webhooks' - 'API-credentials' to find the API keys
Required
typetypeRequired to be "group"
Required
messagemessagethe message to be sent
Required
togroup IDThe ID of the group that will receive the message. Both the numeric ID and the public ID (gid_...) are accepted
Required
sendersenderThe number or name of the sender. A number can't be longer than 14 characters.A name can't be longer than 11 characters and can't contain special characters
Required
dateDate and time the message will be sentFormat: yyyy-MM-dd HH:mm. If not provided, the message will be sent as soon as possible
Optional
referencecustom referenceString of max. 255 characters
Optional
testtrue/falseThe system will check all parameters but will not send an SMS message (no credits used).
Optional
subidid of a subaccountIf specified, the message will be sent from the subaccount.
Optional
<?php
	//PHP - cURL
	$ch = curl_init();
	$url = "https://api.smsgatewayapi.com/v1/message/send";
	$client_id = "XXX"; // Your API client ID (required)
	$client_secret = "YYY"; // Your API client secret (required)
	$data = [
		'type' => "group" //(required)
		'message' => "Hello World", //Message (required)
		'to' => {ID}, //Group ID (required)
]; curl_setopt($ch, CURLOPT_URL, "$url"); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_VERBOSE, true); curl_setopt($ch, CURLOPT_HTTPHEADER, [ "X-Client-Id: $client_id", "X-Client-Secret: $client_secret", "Content-Type: application/json", ]); curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($data)); $response = curl_exec($ch); ?>

Example request:

{
	"message": "Hello World",
	"to": "{groupid}",
	"date":"2024-10-15 15:30",
	"sender": "YourName"
}

Example response:

{
	"messageid": "h2md1ewkyzjkuyn9ak7pryw1evtyw3x"
}

Exceptions:

Our system processes the messages in UTF8 and generates this in GSM unicode. There are 9 characters that are counted as 2 characters in GSM unicode. If you use one of these characters in your message, your message will be longer. Example: If you have a message of 160 characters and you used a €-characters then the message real length is 161 characters long
Symbol Name Symbol Name Symbol Name
Euro symbol \ Backslash } Right brace
[ Open bracket ^ Caret ~ Tilde
] Close bracket { Left brace | Vertical bar

SMS API

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