Plug & Play SMS API
Kudosity's SMS API service allows flexible integration of SMS and MMS capabilities into your applications, whether you need to send one message or one million.
Supports enterprise security and local hosting.
Get started with a few lines of code
Send, receive, and retrieve data with our documented libraries. With our APIs, sending an SMS or MMS takes just a few minutes.
Send SMS
curl --request POST \
--url https://api.transmitsms.com/send-sms.json \
--header 'accept: application/json' \
--header 'content-type: application/x-www-form-urlencoded'Receive SMS Responses
curl --request POST \
--url https://api.transmitsms.com/get-sms-responses.json \
--header 'accept: application/json' \
--header 'content-type: application/x-www-form-urlencoded'Format Number
curl --request POST \
--url https://api.transmitsms.com/format-number.json \
--header 'accept: application/json' \
--header 'content-type: application/x-www-form-urlencoded'Lease Number
curl --request POST \
--url https://api.transmitsms.com/lease-number.json \
--header 'accept: application/json' \
--header 'content-type: application/x-www-form-urlencoded'Opt Out/Unsubscribe Contact
curl --request POST \
--url https://api.transmitsms.com/optout-list-member.json \
--header 'accept: application/json' \
--header 'content-type: application/x-www-form-urlencoded'Get Message/Campaign Report
curl --request POST \
--url https://api.transmitsms.com/get-sms-stats.json \
--header 'accept: application/json' \
--header 'content-type: application/x-www-form-urlencoded'Add Contact to List
curl --request POST \
--url https://api.transmitsms.com/add-to-list.json \
--header 'accept: application/json' \
--header 'content-type: application/x-www-form-urlencoded'Everything you need to build
You won’t need to fight the docs, wait on support tickets or reverse-engineer workarounds. We’ve built a platform that supports your team from the first API call.
Comprehensive Documentation
Simple HTTP-based API with detailed API reference, quick-start guides, and code samples. Perfect for most integrations.
Webhooks & Callbacks
Real-time delivery reports (DLR), inbound message notifications, replies, SMS triggers, and link tracking callbacks.
Multi-channel Messaging
SMS, MMS, RCS, and WhatsApp. All through unified APIs. The Transmit Message API (v2) supports all channels via webhooks.
Global Delivery
100% delivery to carrier guarantee through direct connections with local carriers. Reach customers worldwide with intelligent routing.
Virtual Numbers
Lease virtual mobile numbers for two-way messaging. Customisable sender IDs and dedicated numbers for consistent branding.
Sandbox Testing
Test your integration with free trial credits. Send real messages, validate endpoints, and iterate quickly before going to production.
Flexible billing for every business model
Kudosity offers pay-as-you-go and custom pricing for global SMS and international messaging.
Enterprise pricing starts from 4.9c per SMS based on volume and contractual terms.
Easy SMS integration with
your existing Tech Stack
Kudosity easily integrates with your existing systems, offering 15+ direct integrations with platforms like Salesforce, Oracle, and Zoho. Access 7,000+ Zapier integrations, connecting with tools like Facebook, Shopify, MailChimp, and more.
Plus, our flexible API allows you to build custom SMS solutions directly within your applications, with full developer resources for easy setup. Streamline your customer communication across channels.
Reliable SMS API with guaranteed delivery and scalability
Your business communications deserve infrastructure that performs under pressure.
Kudosity’s SMS text API ensures your messages are delivered fast, securely, and with complete visibility.
Enterprise-Grade Speed & Uptime
Up to 3,000 SMS per second.
Avg. delivery time: 2.5 seconds.
99.9% uptime SLA, backed by refund terms if exceeded.
Scalable Bulk SMS API Messaging
Kudosity offers flexible pricing based on volume, making it ideal for bulk campaigns, transactional messages, and high-volume marketing, without hidden fees.
100% Carrier Delivery Guarantee
Unlike providers who rely on grey routes, we use direct connections to Tier 1 carriers to ensure every message reaches the recipient’s carrier.
NEW: MCP Server for AI Assistants
The future of API development is here. Connect your AI coding assistant directly to Kudosity.
Supercharge your AI development workflow
The Kudosity MCP (Model Context Protocol) server enables AI-powered development tools like Cursor, Windsurf, and Claude Desktop to directly access Kudosity APIs. Build messaging integrations faster with AI assistance that understands your API.
API Discovery & Exploration
Discover available messaging APIs (SMS, RCS, WhatsApp)
Code Generation
Generate code snippets in curl, JavaScript, Python, and more
Live API Execution
Run real API calls and send test messages from your IDE
Documentation Access
Retrieve schemas, authentication requirements, and docs instantly
Why choose Kudosity's SMS API solution?
If you're looking for the best SMS API for your business, Kudosity combines performance, security, and flexibility:
Hosted locally and in compliance.
ISO27001 and SOC 2 Type II Certified.
Transparent pricing and customised plans.
Award-winning solutions.
100% Australian owned and managed.
Virtual mobile numbers.
Direct Tier 1 carrier connections only (no grey routes).
24/7 support and dedicated account managers.
Get started with Kudosity SMS API today
Sign up for our SMS API today and build innovative solutions that drive results. Our SMS API is designed to be developer-friendly, with comprehensive documentation and support resources to ensure a smooth integration process.
What our customers say
Within the first 90 minutes, there was a 4x increase in website visitors and sales increased by 59%. What's even more exciting is the significant growth in first-time customers and returning customers.
){kind=logo}
){kind=logo}
){kind=logo}
){kind=logo}
){kind=logo}
FAQs
How do I get started with Kudosity's SMS API?
To get started with our SMS REST API, sign up for a trial account. Once registered, navigate to settings for your API key and secret. Using these credentials, you can integrate SMS and MMS into your applications. Follow the documentation on our Developer Portal.
What are the common use cases for Kudosity's APIs?
Customers often use our API to send transactional messages, marketing campaigns, appointment reminders, alerts and notifications, customer support, and Two-Way communications. Our APIs are versatile and can be used by various industries to enhance customer engagement and streamline communications.
How do I handle message delivery and error responses?
Our APIs provide delivery reports and error codes to help you track the status of your messages. Delivery reports indicate whether a message was successfully delivered to the recipient’s phone. Error codes help diagnose issues, such as invalid phone numbers or network problems. Our API documentation will detail how to handle these responses and implement error handling in your application.
How do I ensure compliance with regulations when using Kudosity’s APIs?
To comply with regulations such as GDPR and the CAN-SPAM Act, ensure you have obtained explicit consent from recipients to send them SMS messages. Include opt-out options in your messages and maintain accurate records of consents and preferences.
Can I send messages internationally with Kudosity's APIs?
Yes, our SMS APIs support international messaging, allowing you to send SMS messages to recipients in different countries. However, you need to be aware of international regulations and potential differences in costs.
You can talk to one of our experts to confirm our supported countries, requirements and pricing.
Over +15 direct integrations available
Offering direct integrations with platforms like Salesforce, Oracle, and Zoho and access 7,000+ Zapier integrations, connecting with tools like Facebook, Shopify, MailChimp, and more.