Send SMS File

Send SMS File for SMSGatewayCenter APIs

Welcome to SMSGatewayCenter’s API documentation hub! This guide helps you send SMS using file uploads with our powerful Send SMS using File Upload API, part of our messaging suite including SMS API for bulk messaging, WhatsApp Business API for customer engagement, Voice Call API for automated alerts, and Two-Way SMS API for interactive communication. Our API supports only POST methods over HTTP, offering scalability for file-based SMS. Ideal for developers in India, start integrating with our SMS gateway at unify.smsgateway.center/signup/!

Send SMS by uploading files with mobile numbers, messages, or custom content—single or multiple entries. Include country codes for international messaging to ensure global reach. This endpoint enhances your bulk SMS campaigns with real-time delivery reports and Unicode support, perfect for large-scale notifications.

Check out Personalized SMS for custom upload.

 

API Endpoint

https://unify.smsgateway.center/SMSApi/send

 

Required Parameters
KeyValueDescription
Login Credentials (Required)
Authenticate your API request using userid-password or apiKey—choose one method.
useridYour Registered UsernameYour registered username; use if apiKey isn’t provided. Signup for User ID
passwordYour PasswordURL-encoded password (for special characters); use if apiKey isn’t provided. Signup for API Key
Header (optional) Parameters
apiKeyYour unique apiKeyapiKey needs to be sent as HTTP header when you are not using userid-password method. You can avail this from your user control panel and use instead of userid-password HTTP Request parameter. Please do not disclose this to anyone.
Required Parameters
sendMethodbulkuploadMethod needs to be defined as bulkupload to send SMS using file upload.
fileYour File with mobile numbers.You can use multiple formats such as csv, xls, xlsx and zip extension formats.
msgHello WorldYour message content.
senderidSENDERYour registered and approved sender name,
msgTypeunicode|textunicode for regional and text for English message content.
outputplain|json|plainValue for response format.System default is plain. If you need responses in json or plain then you have to give value as json or plain.
Optional Parameters
duplicatechecktrue|falseEnable to remove duplicate mobile numbers. Default is true.
scheduleTimeSchedule TimeDate format YYYY-MM-DD HH:MM:SS
trackLinktrue|falseEnable true to track links from your SMS content.
smartLinkTitleTitle for the link trackingA brief title to recognise your smart link campaign.
testMessagetrue|falseEnable true to test your message and messages wont be delivered when enabled true.

 

Sample Request Code
<?php

$curl = curl_init();

curl_setopt_array($curl, array(
  CURLOPT_URL => "https://unify.smsgateway.center/SMSApi/send",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "POST",
  CURLOPT_POSTFIELDS => "------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"userid\"\r\n\r\nYourUsername\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"password\"\r\n\r\nYourPassword\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"senderid\"\r\n\r\nSENDER\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"sendMethod\"\r\n\r\nbulkupload\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"msgType\"\r\n\r\ntext\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"msg\"\r\n\r\nHello World\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"duplicatecheck\"\r\n\r\ntrue\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"file\"; filename=\"mobile_no_file.csv\"\r\nContent-Type: text/csv\r\n\r\n\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW\r\nContent-Disposition: form-data; name=\"output\"\r\n\r\njson\r\n------WebKitFormBoundary7MA4YWxkTrZu0gW--",
  CURLOPT_HTTPHEADER => array(
    "cache-control: no-cache",
    "content-type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW"
  ),
));

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

 

Sample Response Code
{
    "status": "success",
    "transactionId": "9140733627001556338",
    "statusCode": "200",
    "reason": "success"
}
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Testimonials

Why do Great Businesses Trust SMS Gateway Center?

K

Kurlon IT

2022-08-04

We have tied up with other SMS providers also, but SMS GatewayCenter is quite good. Good Service from the team. We are very happy with the service be it accounts related or technical issue. We always get good response.

I

INOX Air Products

2018-02-09

We have an excellent experience with SMS Gateway Center. The services and support has been of very high standard.

S

Shalabh Arora

2025-04-11

I’ve been using SMSGatewayCenter’s bulk SMS and WhatsApp services since early 2022 for my small business, and the experience has been fantastic. The platform is intuitive, and the message delivery is incredibly reliable, reaching my customers without fail. The 24/7 support team is quick to assist, and the cost-effectiveness is a big plus. It’s transformed how I connect with my audience, and I highly recommend it to other entrepreneurs! (Google Revirews)

R

Reflex

2025-04-11

We’ve been using your bulk SMS services for a few months, and the results have been phenomenal. The open rates and customer engagement have gone through the roof. Highly recommend for any business looking to scale fast! (Google Revirews)

V

Vedanth Gowda

2025-04-18

I’m Vedanth Gowda, leading a finance business, and I’ve been leveraging SMSGatewayCenter’s bulk SMS and WhatsApp tools —absolutely transformative! The platform’s speed and precision in delivering financial alerts to my clients are unmatched, giving me a competitive edge. Samrat’s expertise in tailoring notification workflows for market updates was a standout, and the robust security features instilled trust. The affordable pricing and proactive support team make it a no-brainer. Perfect for finance pros aiming to elevate client trust and efficiency! (Google Revirews)

N

Naval Bhatnagar

2025-04-12

From day one, the team at SMS GATEWAY CENTER guided us through setup, testing, and launching campaigns. Their support is A+. Whether you’re new to SMS marketing or experienced, they make it smooth. Thank you Aakash. (Google Revirews)