SMS Messaging API for Businesses

Send and track SMS messages programmatically using Exotel’s SMS APIs. Build the future of communication with fast, reliable and efficient SMS APIs powering more than 1 billion SMSes a year.

Get the best delivery rates at the lowest prices.



Trusted By

cloud telephony - south east asia - exotel
cloud communications

What is SMS API?


An SMS API allows you to send SMS messages using code. You can trigger messages to your customers on autopilot based on predetermined conditions. For example, every time a customer raises a payment request, you can send them an OTP for verification automatically. To send an SMS using Exotel’s SMS API, you will need to make an HTTP POST request to: https://<your_api_key>:<your_api_token><subdomain>/v1/Accounts/<your_sid>/Sms/send

Find out more about how you can use Exotel’s API here.

Why use Exotel’s SMS API

Find out why you should use SMS API for Business Communication in this video.

Use Cases using SMS API

Bulk SMS Campaign

Use sms broadcasting software to reach out to all your customers with personalised messaging based on your marketing requirements.

OTP Verification

Timely OTP verification SMS that helps improve the security of your business.

Appointment Reminder

Remind your customers about their appointments with automated business SMSes.


Billing & Payment

Send your customers timely and helpful payment reminder.

Survey & Feedback

Business SMS (alongwith SMS masking) is the most non-intrusive way for you to collect feedback from your customers after every interaction.

Status updates

Keep your customers updated about the status of their order, payments, deliveries, etc. via SMS.

Why Exotel’s SMS APIs?

Simple, easy-to-use

Exotel’s APIs are straightforward and are easy to understand and use.


Everything you need to send SMSes using our API is well documented, down to the last detail.

Highly flexible

Exotel’s SMS API is highly flexible to work well for your business.


Real-time reporting

View delivery and engagement status reports in real-time.



Automation is the biggest benefit of using SMS API – you only need to set it up once.


Send static or dynamic SMS

Exotel’s SMS APIs support both static and dynamic text messages.

High delivery rates

Exotel has built-in redundancies to ensure that your SMS gets delivered on time, every time.

Using our REST API, you can send bulk sms using static and dynamic content. Learn more >>

Here’s what our customers have to say

Chirag Patel

Exotel's API documentation and implementation process is extremely simple and easy to follow. There were no hassles in setting it up. We use other cloud telephony platforms as well but Exotel gets a big thumbs-up from us for their ease of use.

Engineering Manager, 1mg

Shashank ND

We have worked across cloud telephony players and with other vendors, but the fact is Exotel is dependable.

Co-Founder & CEO, Practo

Prateek Jain

The number masking feature has been a very worthy addition to making our customer experience even better.

Former Associate Director - Driver Experience, Olacabs


Exotel's automated calls have helped in increasing our service levels and reducing our costs since there is no need for any manual intervention.

Senior Manager - Operations and Strategy

Praveen Kumar

Exotel's APIs are very clearly defined. Our tech team could integrate them in no time. It’s easy to incorporate into any product.

Assistant Vice President, Quikr Services

Satish Chugh

Very supportive and understanding staff who have lived up to every expectation, and at times exceeded them too.

Senior Manager- Last Mile Design, Ekart

Here’s how our customers use Exotel’s SMS API for their business

How Nearbuy (Groupon) uses us for sending bulk SMSes

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How Exotel helps Vedantu send SMSes about offers or promotions.

Read More

Amnesty uses Exotel to garner support for its campaigns

Read More

Who should use our SMS platform?

Take a glimpse of how Exotel’s SMS platform helped Go-Jek increase their SMS delivery rates to 92% !

Here is how Nearbuy uses our SMS API for their business


How Nearbuy (Groupon) uses our Business SMS service through our SMS API

Nearbuy’s entire business revolves around their interactions with customers and dealers. Therefore, getting in touch with their clients and traders within a specific time frame is the key to running their business operations efficiently. This led to Nearbuy getting in touch with us for business sms solutions via our SMS API.

Read More


Try Exotel Free for 15 days!

Get ₹1000 worth free call & SMS credits

E-book: Finding a secure SMS provider

The cost of cybersecurity breaches is only growing, both capital and reputation wise. SMS channels are becoming more prone to customer data being leaked to fraudulent entities who resell the data to organisations like your competitors. Through our work offering and improving the security of our bulk SMS services with large Asian enterprises, we put together a helpful playbook around the parameters you should look for in an SMS vendor that you partner with.


How does SMS API work?

The SMS API is a HTTP based REST API which allows you to trigger SMSes using actions/buttons at your internal application. An SMS API is something like a code that allows communication between one platform to another. Think of it as a friendship between two people, a bond is created and then knowledge or information is shared.


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Why use an SMS API?

SMS APIs are used to allow web applications to send and receive text messages through logic written for standard web frameworks. In simple words, SMS API helps to send and receive messages from the web using SMS API gateways.


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What are the advantages of using an SMS API?

Following are the advantages:


1. It is a completely automated process.

2. It is quick and reliable.

3. SMS API is completely secure.

4. You can have a single control center for all your messages.

5. You can get real-time reports on the delivery rate.


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What is the price of implementing SMS API?

SMS API will be charge based on usage. To get detailed pricing, please contact our sales team.


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Does Exotel's SMS API work with all CRM's?

Yes, SMS API can be integrated with all the CRMs.


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The Exotel Advantage

Why Exotel is considered as the most reliable SMS communications company in the Asia Pacific region.

Superior Quality

Best success rates, voice quality and reduced latency

Scale at Ease

Grow at will, expand without worrying about infrastructure

Superior Reliability

Best in class uptimes of 99.94% including operator uptimes

Best Support

24×7 customer support via phone, email and Twitter

Simple to implement

Sign up and get started in less than 30 minutes, integrate easily using our REST APIs

Extensive Reporting

Easy to understand, detailed reports sent every day

Find out how Exotel can work for you. Set up a call.

We take away some of the biggest pain points of traditional systems like EPABX.