Multi-Channel Messaging Platform

Messaging API
Multi-Channel Messaging for Developers

Unified messaging API for Email, SMS, WhatsApp, and Push notifications. One simple API for all channels.
99.9% uptime. RESTful API. Real-time webhooks. Start sending in 5 minutes.

Complete Messaging API Features

Multi-Channel

Send messages via Email, SMS, WhatsApp, and Push notifications from one unified API

RESTful API

Simple REST API with JSON payloads. Works with any programming language or framework

Real-time Webhooks

Receive instant delivery receipts, status updates, and user actions via webhooks

Message Templates

Create reusable templates with dynamic variables for personalized messaging at scale

Powerful Messaging API Capabilities

Delivery Tracking & Analytics

Real-time message tracking across all channels. Monitor sent, delivered, opened, clicked, and failed messages. Comprehensive analytics dashboard with delivery rates, engagement metrics, and ROI tracking.

Message Scheduling

Schedule messages for future delivery across all channels. Send based on recipient timezone for optimal engagement. Queue messages for time-sensitive campaigns and automated workflows.

Rate Limiting & Throttling

Intelligent rate limiting to comply with channel restrictions. Automatic throttling and retry logic. Configure custom sending rates and burst limits. Prevent API abuse with built-in rate controls.

Multiple SDKs

Official SDKs for Node.js, Python, PHP, Ruby, Java, Go, and C#. TypeScript support with full type definitions. Comprehensive code examples and quick start guides for every language.

Smart Routing & Failover

Automatic channel failover and fallback strategies. If a channel fails, automatically retry via backup channels. Route messages based on recipient preferences and channel availability.

User Preferences Management

Built-in user preference management. Let users choose their preferred channels and notification settings. Automatic opt-out handling and unsubscribe management across all channels.

Workflow Automation

Create multi-step messaging workflows with conditional logic. Trigger messages based on user actions and events. Build complex automation sequences across multiple channels.

Enterprise Security

End-to-end encryption for all messages. API key authentication with IP whitelisting. Role-based access control and audit logs. SOC 2 Type II certified infrastructure with 99.9% uptime SLA.

Global Delivery

Send messages globally to 200+ countries. Multi-language support with Unicode and right-to-left text. Timezone-aware scheduling and localization support for international audiences.

A/B Testing

Test different message variants across channels. Split test subject lines, content, timing, and sending channels. Optimize campaigns with data-driven insights and conversion tracking.

Send Messages with Simple REST API

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

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

// Send multi-channel message
{
  "to": "user@example.com",
  "channels": ["email", "push"],
  "template": "order-confirmation",
  "variables": {
    "name": "John Doe",
    "orderId": "#12345",
    "total": "$99.99"
  },
  "webhookUrl": "https://yourapp.com/webhooks/delivery"
}

// Response
{
  "success": true,
  "messageId": "msg_abc123xyz",
  "channels": {
    "email": {
      "status": "sent",
      "messageId": "email_xyz789"
    },
    "push": {
      "status": "sent",
      "messageId": "push_def456"
    }
  }
}
        

Node.js SDK Example

Install our Node.js SDK and start sending messages in minutes. Full TypeScript support with type definitions.

// Install the SDK
npm install @sendmator/node

// Import and initialize
const { Sendmator } = require('@sendmator/node');
const client = new Sendmator('your-api-key');

// Send transactional notification
const message = await client.messages.send({
  to: 'user@example.com',
  channels: ['email', 'sms', 'push'],
  template: 'password-reset',
  variables: {
    name: 'Sarah',
    resetLink: 'https://app.example.com/reset/token123',
    expiresIn: '15 minutes'
  },
  metadata: {
    userId: 'user_123',
    campaign: 'password-reset'
  }
});

console.log(`Message sent: ${message.id}`);

// Track delivery status
const status = await client.messages.getStatus(message.id);
console.log(`Status: ${status.channels.email.status}`);
        

Python SDK Example

Use our Python SDK for seamless integration. Perfect for data science, automation, and backend services.

# Install the SDK
pip install sendmator

# Import and initialize
from sendmator import Sendmator

client = Sendmator(api_key='your-api-key')

# Send multi-channel alert
message = client.messages.send(
    to='admin@example.com',
    channels=['email', 'sms'],
    subject='Critical System Alert',
    body='Server CPU usage exceeded 90%. Immediate attention required.',
    priority='high',
    metadata={
        'server': 'prod-web-01',
        'alertType': 'cpu-threshold'
    }
)

print(f'Alert sent: {message.id}')

# Send bulk marketing messages
recipients = [
    {'email': 'user1@example.com', 'name': 'Alice'},
    {'email': 'user2@example.com', 'name': 'Bob'}
]

for recipient in recipients:
    client.messages.send(
        to=recipient['email'],
        template='promotional-offer',
        variables={'name': recipient['name']}
    )
        

PHP SDK Example

Integrate messaging into your PHP applications. Works with Laravel, WordPress, Symfony, and any PHP framework.

// Install via Composer
composer require sendmator/php-sdk

// Initialize the client
use Sendmator\Client;

$client = new Client('your-api-key');

// Send order confirmation
$message = $client->messages->send([
    'to' => 'customer@example.com',
    'channels' => ['email', 'whatsapp'],
    'template' => 'order-confirmation',
    'variables' => [
        'customerName' => 'Michael Chen',
        'orderId' => 'ORD-2026-5432',
        'orderTotal' => '$249.99',
        'trackingUrl' => 'https://track.example.com/5432'
    ]
]);

echo "Message ID: {$message->id}\n";

// Laravel example
use Illuminate\Support\Facades\Sendmator;

Sendmator::send([
    'to' => $user->email,
    'template' => 'welcome-email',
    'variables' => ['name' => $user->name]
]);
        

Messaging API Use Cases

Transactional Notifications

Send order confirmations, shipping updates, payment receipts, and account notifications across all channels. Ensure critical messages reach users instantly via their preferred channel.

OTP & Authentication

Send one-time passwords, verification codes, and two-factor authentication messages via SMS, Email, or WhatsApp. Secure your application with multi-channel authentication.

Alerts & Monitoring

Send critical system alerts, security warnings, and monitoring notifications. Ensure your team receives urgent alerts via multiple channels for maximum reliability.

Marketing Campaigns

Run multi-channel marketing campaigns with promotional offers, product launches, and newsletters. Reach customers where they are most engaged with A/B testing and analytics.

Customer Support

Send support ticket updates, resolution notifications, and customer service messages. Enable two-way conversations across Email, SMS, and WhatsApp for better support.

Appointment Reminders

Reduce no-shows with automated multi-channel reminders. Send confirmations, 24-hour reminders, and last-minute updates via Email, SMS, and Push notifications.

Supported Message Types

Transactional

Order confirmations, receipts, account updates, password resets

Marketing

Promotional campaigns, newsletters, product announcements, offers

Notifications

App updates, new features, activity alerts, social updates

Alerts

Security alerts, system warnings, critical updates, emergencies

Why Choose Sendmator Messaging API?

Unified API

One simple API for Email, SMS, WhatsApp, and Push. No need to integrate multiple providers. Consistent API design across all channels.

Developer Friendly

RESTful API with JSON payloads. Multiple SDKs for popular languages. Comprehensive docs, code examples, and Postman collections.

Real-time Webhooks

Instant delivery receipts and event notifications. Track opens, clicks, and user actions in real-time. Webhook retry logic for reliability.

Lightning Fast

99.9% messages delivered within seconds. Low-latency global infrastructure. Optimized routing for fastest delivery across all channels.

Advanced Analytics

Comprehensive analytics across all channels. Track delivery rates, engagement metrics, and ROI. Export data for custom analysis.

99.9% Uptime

Enterprise-grade infrastructure with SLA guarantees. Automatic failover and redundancy. SOC 2 certified with 24/7 monitoring.

Advanced Messaging Features

Dynamic Content Rendering

Use template variables, conditional blocks, and loops. Personalize messages with dynamic data. Support for Handlebars, Liquid, and custom syntax.

HTML Email Templates

Create beautiful responsive HTML emails. Built-in CSS inlining and preprocessing. Mobile-optimized templates with dark mode support.

Link Tracking

Automatically track link clicks across all channels. Monitor engagement and conversion rates. UTM parameter support for attribution.

Attachments Support

Send files, PDFs, images, and documents via email. Support for multiple attachments up to 25MB. Cloud storage integration for large files.

Advanced Segmentation

Target messages based on user attributes, behavior, and preferences. Dynamic audience building with filters. Segment-based routing logic.

Inbox Preview

Preview how messages appear across 90+ email clients and devices. Test rendering before sending. Spam score checking and suggestions.

Sendmator vs Competitors

See how our Messaging API compares to Twilio, SendGrid, and other messaging platforms

Feature Sendmator Twilio SendGrid
Unified Multi-Channel API
Email, SMS, WhatsApp, Push
Real-time Webhooks
Message Templates
User Preference Management
A/B Testing
Multiple SDKs (7+)
Free Trial
Pricing Model Pay-as-you-go Pay-as-you-go Contact Sales
24/7 Support
Try Sendmator Messaging API

Frequently Asked Questions

What is a Messaging API?

A Messaging API is a programmable interface that allows developers to send messages across multiple channels (Email, SMS, WhatsApp, Push) from a single unified API. It eliminates the need to integrate with multiple providers.

Which channels are supported?

Sendmator supports Email, SMS, WhatsApp Business, and Push Notifications. All channels are accessible through a single unified API with consistent request/response formats and webhook events.

How do webhooks work?

Webhooks send real-time HTTP POST requests to your server when events occur (delivered, opened, clicked, failed). You receive instant notifications about message status across all channels with automatic retry logic.

Can I use message templates?

Yes, create reusable templates with dynamic variables, conditional content, and loops. Templates work across all channels. Use Handlebars syntax for advanced logic. Store templates in Sendmator or manage them in your codebase.

What SDKs are available?

We provide official SDKs for Node.js, Python, PHP, Ruby, Java, Go, and C#. All SDKs have full TypeScript/type support, comprehensive documentation, and code examples. REST API works with any language.

How does rate limiting work?

We enforce intelligent rate limits per channel to comply with carrier and platform restrictions. Automatic throttling prevents API abuse. Configure custom rate limits based on your needs. Burst allowances for traffic spikes.

Can I schedule messages?

Yes, schedule messages for future delivery across all channels. Send at specific times or based on recipient timezone. Cancel scheduled messages before sending. Queue messages for drip campaigns and automation.

How do I track message delivery?

Every message gets a unique ID. Track status via API or webhooks. Real-time events for sent, delivered, opened, clicked, and failed. Comprehensive analytics dashboard. Export delivery reports as CSV or JSON.

Is there a free trial?

Yes, we offer a free trial with credits to test all channels. No credit card required to start. Full access to all API features, webhooks, templates, and analytics. Upgrade anytime with pay-as-you-go pricing.

How does multi-channel routing work?

Specify multiple channels in priority order. If the first channel fails, we automatically failover to the next. Route based on user preferences. Smart routing logic ensures messages reach users via their preferred channel.

Is the API GDPR compliant?

Yes, fully GDPR, TCPA, and CAN-SPAM compliant. Built-in user preference management and opt-out handling. Data encryption in transit and at rest. Right to deletion and data export. EU data residency available.

What support do you offer?

24/7 technical support via email and chat. Enterprise customers get phone support and dedicated success managers. Average response time under 2 hours. Comprehensive docs, API reference, and video tutorials available.

Ready to Build with Our Messaging API?

Unified API for Email, SMS, WhatsApp, and Push. Simple REST API with multiple SDKs. Real-time webhooks and analytics. 99.9% uptime. Start free today.

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No credit card required • Multi-channel support • Real-time webhooks • 24/7 support