Programmable SMS API

SMS API for Developers
Global SMS Delivery Made Simple

Send SMS messages globally with our reliable SMS API. OTP verification, bulk SMS, transactional alerts, and two-way messaging.
99.9% delivery rate. $0.015/SMS. 200+ countries. Start sending in 5 minutes.

Complete SMS API Features

Global SMS

Send SMS to 200+ countries with local carrier connections for best delivery rates

OTP & 2FA

Secure user verification with SMS OTP codes and two-factor authentication

Bulk SMS

Send thousands of SMS messages simultaneously with our bulk SMS API

Two-Way SMS

Receive SMS replies and create interactive SMS conversations with users

Powerful SMS API Capabilities

SMS Templates

Create reusable SMS templates with dynamic variables. Personalize messages at scale with merge tags for names, OTP codes, order IDs, and custom data.

Delivery Tracking

Real-time SMS delivery tracking with detailed status updates. Monitor sent, delivered, failed, and read receipts. Get instant delivery webhooks.

Phone Validation

Validate phone numbers before sending SMS. Check format, carrier, number type, and country. Reduce costs by filtering invalid numbers automatically.

Scheduled SMS

Schedule SMS messages for future delivery. Send based on recipient timezone for optimal open rates. Queue messages for time-sensitive campaigns.

Custom Sender ID

Use your brand name as SMS sender ID for better recognition and trust. Support for alphanumeric sender IDs in 100+ countries.

DND & Opt-out

Automatic DND list management and opt-out handling. GDPR and TCPA compliant SMS sending. Built-in unsubscribe link support.

Unicode & Languages

Send SMS in any language with full Unicode support. Support for Arabic, Chinese, Japanese, Korean, Cyrillic, and all other character sets.

High Throughput

Send up to 1000 SMS per second with our scalable infrastructure. No throttling during peak hours. Dedicated SMS routes for enterprise customers.

Failover & Redundancy

Multiple carrier connections for automatic failover. If one route fails, we automatically retry through backup carriers ensuring 99.9% delivery.

SMS Analytics & Reports

Comprehensive SMS analytics dashboard. Track delivery rates, failed messages, costs per country, campaign performance, and ROI metrics.

Send SMS with Simple REST API

Send SMS messages with a single API call. Support for cURL, Node.js, Python, PHP, Ruby, and all major programming languages.

POST https://api.sendmator.com/api/v1/sms/send
Content-Type: application/json
X-API-Key: your-api-key

// Send transactional SMS
{
  "to": "+1234567890",
  "message": "Your order #12345 has been shipped and will arrive tomorrow.",
  "from": "YourBrand"
}

// Response
{
  "success": true,
  "messageId": "msg_abc123xyz",
  "status": "sent",
  "cost": 0.015
}
        

Send OTP SMS for Verification

Secure user authentication with SMS OTP verification. Built-in code generation and validation.

POST https://api.sendmator.com/api/v1/sms/send
Content-Type: application/json
X-API-Key: your-api-key

// Send OTP verification code
{
  "to": "+1234567890",
  "message": "Your verification code is {{otp}}. Valid for 5 minutes.",
  "from": "YourApp",
  "variables": {
    "otp": "123456"
  },
  "type": "otp"
}

// Node.js example
const response = await fetch('https://api.sendmator.com/api/v1/sms/send', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'X-API-Key': 'your-api-key'
  },
  body: JSON.stringify({
    to: '+1234567890',
    message: `Your OTP is ${otpCode}. Do not share this code.`,
    from: 'YourApp'
  })
});

// Python example
import requests

response = requests.post(
    'https://api.sendmator.com/api/v1/sms/send',
    headers={'X-API-Key': 'your-api-key'},
    json={
        'to': '+1234567890',
        'message': f'Your verification code: {otp_code}',
        'from': 'YourApp'
    }
)
        

Bulk SMS API Example

Send SMS to thousands of recipients with a single API call. Perfect for marketing campaigns and mass notifications.

POST https://api.sendmator.com/api/v1/sms/send-bulk
Content-Type: application/json
X-API-Key: your-api-key

// Send bulk SMS with personalization
{
  "from": "YourBrand",
  "messages": [
    {
      "to": "+1234567890",
      "message": "Hi John, 20% off expires today! Use code SAVE20"
    },
    {
      "to": "+1234567891",
      "message": "Hi Sarah, 20% off expires today! Use code SAVE20"
    }
  ]
}

// PHP example
$curl = curl_init();
curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.sendmator.com/api/v1/sms/send-bulk",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_HTTPHEADER => [
    "X-API-Key: your-api-key",
    "Content-Type: application/json"
  ],
  CURLOPT_POSTFIELDS => json_encode([
    'from' => 'YourBrand',
    'messages' => $messages
  ])
]);
$response = curl_exec($curl);

// Ruby example
require 'net/http'
require 'json'

uri = URI('https://api.sendmator.com/api/v1/sms/send-bulk')
request = Net::HTTP::Post.new(uri)
request['X-API-Key'] = 'your-api-key'
request.body = { from: 'YourBrand', messages: messages }.to_json
response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: true) { |http|
  http.request(request)
}
        

Transparent SMS API Pricing

Simple, pay-as-you-go pricing. No hidden fees or monthly commitments.

Pay As You Go

$0.015

per SMS message

  • Global SMS delivery
  • No monthly fees
  • No contracts
  • Delivery tracking
  • API access
Get Started Free
BEST VALUE

Volume Pricing

$0.012

per SMS (100K+ msgs/month)

  • All Pay-As-You-Go features
  • Volume discounts
  • Priority support
  • Dedicated account manager
  • Custom sender IDs
Contact Sales

Enterprise

Custom

tailored pricing

  • All Volume features
  • Dedicated routes
  • SLA guarantees
  • Custom integrations
  • 24/7 phone support
Contact Us

Pricing varies by destination country. View full pricing table

SMS API Use Cases

OTP Verification

Send one-time passwords for user authentication, password resets, and two-factor authentication. Secure your application with SMS-based verification codes.

Order Updates

Send transactional SMS for order confirmations, shipping notifications, delivery updates, and payment confirmations. Keep customers informed in real-time.

Alerts & Notifications

Send critical alerts, system notifications, appointment reminders, and time-sensitive updates. Ensure important messages reach users instantly.

Marketing Campaigns

Run SMS marketing campaigns with promotional offers, product launches, flash sales, and exclusive deals. Reach customers with high open rates.

Appointment Reminders

Reduce no-shows with automated appointment reminders. Send confirmations, reminders 24 hours before, and last-minute updates via SMS.

Customer Support

Enable two-way SMS conversations for customer support. Receive inquiries, send support ticket updates, and provide assistance via SMS.

Why Choose Sendmator SMS API?

Global Coverage

Send SMS to 200+ countries with direct carrier connections. Best delivery rates through local routing and tier-1 carrier partnerships.

Lightning Fast

99.9% SMS delivered within 5 seconds. Low-latency infrastructure and optimized routing ensure instant message delivery worldwide.

99.9% Reliability

Enterprise-grade SMS infrastructure with automatic failover. Multiple carrier redundancy ensures messages always get delivered.

Affordable Pricing

$0.015/SMS with volume discounts. 40% cheaper than Twilio and Plivo. No monthly fees, setup costs, or hidden charges.

Developer Friendly

Simple REST API with SDKs for all major languages. Comprehensive documentation, code examples, and Postman collections.

Expert Support

24/7 technical support via email, chat, and phone. Average response time under 2 hours. Dedicated success managers for enterprise.

Advanced SMS API Features

Real-time Webhooks

Receive instant delivery receipts and status updates via webhooks. Track sent, delivered, failed, and replied events in real-time.

Short URL Tracking

Automatically shorten and track URLs in SMS messages. Monitor click rates and user engagement with built-in link analytics.

Smart Throttling

Automatic rate limiting and throttling to comply with carrier restrictions. Optimize delivery speed while respecting limits.

A/B Testing

Test different SMS content, timing, and sender IDs. Optimize campaigns with data-driven insights and split testing.

Dedicated Numbers

Get dedicated phone numbers for two-way SMS and higher sending limits. Support for local, toll-free, and short codes.

Geo-Routing

Intelligent geographic routing for optimal delivery. Automatically select best carrier routes based on recipient location.

Sendmator SMS API vs Competitors

See how our SMS API compares to Twilio, Plivo, and other SMS providers

Feature Sendmator Twilio Plivo
Price per SMS $0.015 $0.025 $0.020
Global Coverage
Delivery Rate 99.9% 99.5% 99.3%
Free Trial
Setup Fees $0 $0 $0
Monthly Fees $0 $0 $0
OTP Templates
24/7 Support
Switch to Sendmator SMS API

Frequently Asked Questions

What is an SMS API?

An SMS API is a programmable interface that allows developers to send and receive SMS messages programmatically. It enables you to integrate SMS functionality into your applications, websites, or systems without building your own SMS infrastructure.

How fast is SMS delivery?

99.9% of SMS messages are delivered within 5 seconds. Our low-latency infrastructure and direct carrier connections ensure instant message delivery worldwide. OTP and transactional SMS typically arrive in 2-3 seconds.

Which countries can I send SMS to?

Our SMS API supports 200+ countries worldwide including USA, UK, India, Canada, Australia, and all major markets. We have direct carrier connections in most countries for best delivery rates. View full country coverage in our documentation.

How does SMS pricing work?

We charge $0.015 per SMS message sent. Pricing varies slightly by destination country. There are no monthly fees, setup costs, or hidden charges. You only pay for messages successfully sent. Volume discounts available for 100K+ messages/month.

Can I use my own sender ID?

Yes, you can use custom alphanumeric sender IDs in 100+ countries. Sender ID is your brand name that appears as the SMS sender (e.g., "YourBrand" instead of a phone number). Registration required in some countries for compliance.

Does the SMS API support two-way messaging?

Yes, our SMS API supports two-way messaging. You can receive SMS replies via webhooks in real-time. Perfect for customer support, surveys, and interactive SMS campaigns. Requires a dedicated phone number or short code.

How do I track SMS delivery?

Every SMS sent receives a unique message ID. You can track delivery status via API or webhooks. We provide real-time status updates: sent, delivered, failed, and read receipts (where supported). Full delivery reports in dashboard.

Is there a free trial?

Yes, we offer a free trial with credits to test our SMS API. No credit card required to start. You can send test SMS messages and explore all features before purchasing credits. Sign up and start sending in 5 minutes.

What programming languages are supported?

Our REST API works with all programming languages. We provide official SDKs for Node.js, Python, PHP, Ruby, Java, Go, and C#. Comprehensive documentation with code examples for each language. Postman collection available.

How many SMS can I send per second?

Standard accounts can send up to 100 SMS per second. Enterprise accounts get dedicated routes with 1000+ SMS per second throughput. No throttling during peak hours. Contact us for custom rate limits based on your needs.

Is the SMS API GDPR compliant?

Yes, our SMS API is fully GDPR and TCPA compliant. We provide built-in opt-out management, DND list handling, and consent tracking. All data is encrypted in transit and at rest. We never share recipient data with third parties.

What support do you offer?

We offer 24/7 technical support via email and chat. Enterprise customers get phone support and dedicated account managers. Average response time is under 2 hours. Comprehensive documentation, API reference, and community forum available.

Ready to Send SMS Messages?

Start sending SMS globally with our powerful API. OTP verification, bulk SMS, transactional alerts. 99.9% delivery rate. $0.015/SMS. No monthly fees.

Start Free Trial

No credit card required • Free test credits • 200+ countries • 24/7 support