Secure, Scalable & Powerful APIs

Easily integrate any application and start using our solutions in minutes. Access sample codes in PHP, Java, .NET & more.

RezMatic powerful APIs allow you to send Text or Voice offers, trigger transactional updates and OTPs, receive inbound triggers, pull reports, manage contacts & more. Our intelligent gateway routing assures best-in-class delivery.

  require 'rezmatic.class.php';
  $rezmatic=new rezmatic('','e215398a8820abd2c7a11a6cd5b1009d');
  $rezmatic->sendSms('917788990011','Your car - KA01 HG 9999 - is due for service on July 24th, please text SERVICE to 92205 92205 for a callback','FORDIN');

Start colloborating in minutes with our sample codes and comprehensive documentation

Reliably and securely send text or voice & receive text or voice from any application. Our platinum operator connectivity and intelligent gateway routing assure best-in-class delivery rates and speed. What's more, our powerful APIs go beyond plain send/receive and allow you to fetch delivery receipts, schedule messages, pull results from mobile forms & surveys, and more. The API is also fully integrated with RezMatic Messenger to easily manage your contacts and groups. Contact us on 845 922 0726 to chat with our experts for advice.

As long as your application is connected to the internet, you can send text or voice call from it. There are full code examples in every modern language to get you started - and what you do from there is up to you. The possibilities really are endless and our phenomenal technical support team are on hand to provide you with assistance every step of the way.

Review date:

Very good email to SMS integration.

Very good email to SMS integration. I always new the importance of SMS marketing and transactions. Since mobility has become a lifestyle for modern demographic, an SMS-based communication or voice based communication and people-IT interaction becomes key to promoting your organizations' campaign and transactions. I came across this service when searching for a tool to send SMS using Email. And I have never had doubt about the other features that TL provides for businesses. It has been an amazing experience so far. I am still learning the proper utility of RezMatic for my needs.
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  • Passionate, dedicated technical support team
    • Get expert help from a world-class support team
    • Bespoke requirement? We've got you covered!
  • Partner with India's #1 automation gateway
    • Join 100,000+ happy developers 
    • Robust platform to send & receive text, clicks and voice, access reports, manage contacts & more
    • Easily scale from 1 to 1 million triggers 
    • Secure communications trusted by global banks
  • Access comprehensive API documentation
    • See sample codes in PHP, Java, .NET, C# & more
  • Platinum Indian operator partner
logo-BSNL.png logo-Airtel.png Vodafone logo

Over 100,000 developers rely on RezMatic APIs to send and receive text, clicks or voice

Robust, scalable cloud-based infrastructure

  • Inbuilt redundancy for near-zero downtime
  • Intelligent routing technology to select the best possible routes
  • Secure gateway, trusted by leading banks


  • Access to APIs is available for all of your requirements
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Best in class delivery

  • Direct operator connectivity
  • Unmatched delivery, whether it’s 1 or 1 million triggers

Passionate, dedicated technical support team

  • Expert technical support to help you ivntegrate easily
  • Help with bespoke integration to meet your specific needs
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Easily Integrate Business SMS Features with RezMatic APIs 

Our APIs go beyond just sending text, voice or click, you can now schedule messages, manage contacts, retrieve inbound messages and so much more. Why not take a look at the features below and get the ball rolling on your project!

Send a text or voice engagement trigger

Send individual or group SMS or automated calls. Send up to any number of sms or voice per second using our robust bulk API with full delivery receipts.

Scheduled Campaigns

Get a detailed list of all the messages you have scheduled to be sent out. Cancel any unwanted messages directly from within your own website or app.

Inbound Messages

Retrieve a list of inboxes and get the full list of messages in a range if required. Results are returned as either JSON or XML for easy inclusion in your own systems.

Contact Management

Manage your contacts, create and delete contact groups, add contacts either individually or in bulk.

Message Reporting

Retrieve your message history including messages or calls sent through Messenger or the API. Get the status of any message or group of messages.

Messenger Surveys

Retrieve a list of your surveys. Your survey results are returned as either JSON or XML, these can be easily integrated in your own website or app. .

Account Management

Keep track of your RezMatic account, easily retrieve your SMS, Voice Call and MMS balances. Pull out a list of all of the sender names on your account.

Reseller Management

Manage your white label account. Retrieve a list of all the accounts under your white label account, and transfer credits between those accounts.

Manage Delivery Reports

Choose to receive API delivery receipts directly to your application on a common URL or specify the delivery notification URL during the send process.


Getting started with RezMatic APIs is easy

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Get started with a RezMatic account

Signup for a RezMatic account here.

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Ask for an API key

Submit the required documentation to get your API key.

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Integrate your application

Refer our documentation to easily integrate your application.

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Convert account to Transactional (optional)

Your RezMatic account is Promotional by default. Convert it to Transactional route by simply sending an email to


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