Scale your customer engagement with a reliable and proven SMS API

Send and receive text messages without latency, with a superior network of direct carrier connections in over 225 countries

VM-GUPSHUP

Transform SMS into rich media messages with secure and verified brand profiles

Reach out to 900 million+ users globally using RCS Business Messaging, powered by Gupshup

SMS Banner

Trusted by leading brands globally

icici
nsdl
citibank
mensa
ola
swiggy

Enhance customer experience with smart SMS campaigns and alerts

Reach your audience at scale with personalized bulk messages and send relevant launches, offers, deals and discount codes

Ensure mission-critical messages such as OTPs, transaction alerts are always on time with a prioritizing system to handle peak loads

Get more from your SMS marketing campaigns by enriching your content with trackable URL links

Enhance customer experience with smart SMS campaigns and alerts

Engage at scale with secure, compliant 2-way conversations

Let customers message you back with 2-way conversations on SMS using dedicated long and short-codes

Establish credibility and differentiate from spammers with Google verified messages and clear branding

Send uninterrupted SMS messages by complying with DLT registration with an AI powered algorithm that takes care of templates and Sender IDs

Engage at scale with secure, compliant <span>2-way</span> conversations

Enjoy reliable, low latency delivery-worldwide

Communicate on-time with our enterprise grade platform and automatic fallback to voice, WhatsApp after a specified time

Monitor and troubleshoot message delivery, track your global SMS sends and responses with a live monitoring dashboard

Send and receive messages in foreign and regional languages with support for unicode characters

Enjoy reliable, low latency <span>delivery-worldwide</span>
  •  Open rates

    98%

    Open rates

  • Countries <br> globally

    225+

    Countries
    globally

  • Messages sent <br> per month

    9bn+

    Messages sent
    per month

Learn about the basic and advanced API features enabling you to send and receive SMS
Learn more

A reliable, scalable and feature-rich SMS API

card-icon

Pre-defined
templates

Execute faster with messaging templates and opt-in forms for use cases across your customer's journey

card-icon

Verify customer
identity

Add a second layer of run-time authentication for user verification and transactions using OTP

card-icon

Real-time
analytics

Facilitate a seamless connection of two on-call entities without disclosing phone numbers with number masking solution

card-icon

Proven quality
and scale

Get reliable delivery with premium routing and proven scale of billions of transactions every month

card-icon

Globally
compliant

Allow live agents and customers to place a call instantly with a single click directly from the web or mobile app with click-to-call and click-to-video

card-icon

Alphanumeric
Sender ID

Enable customizable and personalized recorded voice interactions without human intervention

A reliable, scalable and <span>feature-rich</span> SMS API

SMS for any business

accordion-image
Secure authentication

Easily authenticate new users, make logins secure, and safeguard transactions with OTPs

accordion-image
Surveys & polls

Collect feedback and poll results faster including market research, employee satisfaction surveys, and more with embedded hyperlinks

accordion-image
Transactional notifications

Remind about bill payments, share account balance, debit alerts and order confirmations with actionable links

accordion-image
Product Launches

Increase new product awareness and drive immediate action with targeted campaigns

accordion-image

Integrate quickly with apps and platforms you already use to create powerful solutions

CRM
Support
Ecommerce
Payments
Marketing Automations

Initiate conversations and nurture leads directly from CRM. Automate order tracking, notifications, alerts, and customer feedback.

zoho
Salesforce
Hubspot
Freshworks
See all integrations
CRM

Initiate conversations and nurture leads directly from CRM. Automate order tracking, notifications, alerts, and customer feedback.

zoho
Salesforce
Hubspot
Freshworks
See all integrations
Support

Streamline customer communication on your favorite helpdesk tool and automatically convert your conversations into tickets.

Zendesk
Freshdesk
Servicenow
See all integrations
Ecommerce

Scale and improve sales with one-click commerce integrations. Delight your customers with a hassle-free shopping experience.

Shopify
Magento
woocommerce
See all integrations
Payments

Seamlessly integrate with payment gateways to enable one-click payments. Increase sales conversions, broaden reach and engagement.

razorpay
setu
payu
See all integrations
Marketing Automations

Connect your marketing tools to automate actions. Personalize messages, target specific user segments, and analyze campaign performance.

marketo
clevertap
moengage
See all integrations

Other products that might interest you

Instagram Messenger API

Engage, transact and build strong relationships with your followers and customers by automating conversations through Gupshup's Instagram API for Direct Messenger

Learn more

WhatsApp Business API

Build stronger customer connections with WhatsApp Business API. Engage customers across sales, marketing and support journeys

Learn more

Frequently Asked Questions

How does a SMS API help?
SMS APIs allow businesses to automate the sending and receiving of text messages. This can save a lot of time and effort, especially for businesses that send a high volume of SMS messages, such as for marketing campaigns or customer notifications. Moreover, SMS APIs can be integrated with other business systems and are highly scalable allowing businesses to easily send and receive a large number of SMS messages without any problems. Plus, they are also cost-effective compared to other channels.
How do I register a DLT template? Why do we need DLT registration?
DLT registration ensures compliance with regulatory requirements for sending commercial messages via SMS, and the process involves registering message templates with the respective telecom authorities.
How to send SMS using an API?
To send SMS using an API, integrate a suitable SMS API provider like Gupshup, into your application and follow their documentation for sending messages programmatically.
What are the requirements for SMS API?
Requirements for an SMS API typically include an API key, authentication credentials, and adherence to the provider's usage policies and guidelines.
What is an SMS API?
An SMS API (Application Programming Interface) provides an integration platform to programmatically send and receive SMS messages.
SMS API provides an easy-to-use interface to integrate messaging into your marketing and customer service programs. You can reliably send SMS to your audience, for use cases such as alerts and notifications, feedback and surveys, payment reminders, and verification codes/ OTPs.
What can I use SMS API for?
An SMS API makes it easy to connect to an SMS gateway and send messages at scale in a reliable and secure way. Some of the uses and benefits include:
  • Send and receive messages such as alerts, notifications, transactional messages, and more
  • Connect with customers in different countries without worrying about technical details like carrier, deliverability, pricing differences, etc.
  • Review message delivery and status in real-time
  • Queue messages for delivery

With SMS API, you get high deliverability even when a large number of messages are sent at the same time, along with insights into which messages are being delivered, which aren’t, and why (or why not). Businesses can send bulk messages, customize sender ID by country, and get real-time delivery receipts - all while ensuring regulatory compliance of their country.
How can I integrate the SMS API?
An SMS API is a basic building block that makes it possible for brands to connect to an SMS gateway easily and eliminates the need to use manual SMS systems.

The integration of SMS API is managed by a software developer. It requires programming, server configuration, data modelling, testing, etc. to communicate with the API, and connect it with the SMS gateway.

It’s easy to build a test integration in just a few hours. For example, to integrate Gupshup’s SMS API from PHP, all you have to do is sign up with Gupshup, create a sender ID, create an API key, and install our PHP code library into your application. Once the PHP API is integrated into your software, you can start sending automated SMS messages from your application.
What is DLT registration?
As per the recent guidelines by Telecom Regulatory Authority of India (TRAI) , it is mandatory for a business to register on the Distributed Ledger Technology (DLT) platform, a block-chain based registration system before sending bulk SMS to its customers. This is aimed at creating more transparency and reducing the incidence of spam and fraud done through SMS. A business entity has to register itself on the DLT portal, register Sender IDs and submit message templates.
Does it cost money to send SMS?
Sending SMS messages via a mobile carrier may involve a charge. Some carriers also charge for receiving SMS messages. These costs can add up, depending on factors like the text volume, message type, countries sent to (or received from), price per message, etc.
With an SMS API provider you can send SMSes to customers in dozens of countries at a much lower rate than you would with regular carrier-based SMS. Gupshup offers pay-as-you-go pricing so you only pay for what you use with full transparency and full flexibility. You can send local and international messages, SMS to toll-free numbers, and more. All messages are sent programmatically, and the API is easy to set up, enabling rapid go live.