Automate your business messaging with a powerful SMS API.
Connect to the SMSLocal infrastructure and send DLT-compliant messages at scale. Developer-friendly REST and XML endpoints, comprehensive docs, and direct-operator delivery — so your customers hear from you the second it matters.
$ curl -X POST https://api.smslocal.in/v1/messages \ -H 'Authorization: Bearer sk_live_xxx' \ -H 'Content-Type: application/json' \ -d '{ "sender": "SMSLCL", "to": ["+919876543210"], "template_id": "1407123456...", "variables": { "order_id": "A7K9" } }'Response
webhook · /delivery
Delivered · Jio primary route · 1.8s
Start sending messages with our API in minutes.
Integrate SMS into your apps with robust, developer-friendly endpoints. Choose JSON or XML — either way, well-documented requests give you the flexibility to plug into any stack.
Why engineering and marketing teams pick the SMSLocal API.
Integrating an SMS API transforms how your product communicates. Here is what you get on day one.
Instant pan-India reach
Connect to every major Indian operator through direct carrier links. Sub-second delivery for OTPs and alerts, even at peak hours.
Boost customer engagement
Trigger timely alerts, promotions, and two-way conversations the moment something changes in your product or CRM.
Built for peak traffic
Handle flash sales, exam results, and festival spikes. Our platform scales linearly without compromising throughput or latency.
Actionable analytics
Real-time delivery, failure, and DND reporting. Filter by campaign, template, operator, or time window — no data warehouse needed.
Unified workflow control
Manage DLT templates, sender IDs, campaigns, and API keys from one dashboard. No separate portals for each operator.
Cost-effective by design
Transparent, volume-tiered pricing with no setup fees. SMS remains the cheapest high-open-rate channel in India, and we keep it that way.
Built for seamless API integration.
The REST API is designed to drop into your website, app, or CRM and disappear — so your team ships messaging features, not infrastructure.
Automate communication
Hook the API into your website, app, or CRM to trigger OTPs, order updates, payment confirmations, and service alerts without human intervention.
Advanced messaging
Send messages in 8+ Indian languages with full Unicode support. Long SMS (up to 1,600 characters) is automatically chunked and reassembled.
Custom workflows
Configure multiple webhooks for delivery, failure, reply, and link-click events. Route each event to the downstream system that cares about it.
Rich content
Attach shortlinks, tracked URLs, and templated parameters to every message. Promote files, PDFs, or landing pages without breaking the SMS limit.
The SMSLocal bulk SMS API, start to finish.
Simple to stand up, easy to scale. Our team is on call 24x7 if you need help at any step.
- 01Step 1
Integrate the API
Drop a single HTTP call into your stack. Choose JSON or XML, authenticate with your API key, and reference your approved DLT templates.
- 02Step 2
Send individual or bulk
Trigger transactional flows, schedule marketing campaigns, or blast critical alerts. The same endpoint handles one message or ten million.
- 03Step 3
Track performance end-to-end
Fetch delivery reports, listen to webhooks, and manage two-way replies. Reconcile with your product analytics in real time.
Flexible paths for every platform.
SMSLocal offers multiple integration methods so your team can pick the path that fits its skill set and timeline.
REST API
The primary integration path. Simple JSON requests over HTTPS with idempotency keys and cursor-based delivery reports.
XML API
A REST-equivalent XML request/response format for stacks that standardised on XML gateways before REST. Same DLT templates, same delivery reports.
Webhooks
Configure delivery, failure, reply, and link-click callbacks so your system gets notified in real time instead of polling for status.
Sandbox with test credits
Every account ships with sandbox credits to test the full round trip — send, delivery report, and credit deduction — before going live.
SDKs — on the roadmap
Official client libraries for Node.js, Python, PHP, Java, and Go are in development. Until they ship, the REST and XML APIs work with any HTTP client.
Your trusted messaging partner.
Businesses across India trust SMSLocal for mission-critical communication. We pair modern API infrastructure with the support and compliance work you would expect from an enterprise vendor.
Direct operator connections
Sub-second delivery for OTPs and alerts through direct interconnects with every major Indian operator — no third-party relay in between.
Expert guidance
Dedicated account managers for growth and enterprise plans. DLT registration help, template review, and campaign tuning at no extra cost.
Data security
DPDP Act-aligned data handling, data residency in India, and encrypted storage for every message payload. Full audit log retention.
Direct operator routes
No reseller hops. Our routes terminate directly on Airtel, Jio, Vi, and BSNL infrastructure for predictable latency and DLR accuracy.
Frequently asked questions
How do I integrate the SMS API?
Sign up, generate an API key, register a DLT sender ID and template, and make a single POST request to /v1/messages. Most teams send their first test SMS within 15 minutes. Full documentation, code examples, and SDKs are available in the API reference.
Can I schedule messages in advance?
Yes. Pass a send_at ISO-8601 timestamp on the send endpoint and we queue the message for delivery at that exact time in IST. You can also cancel or reschedule queued messages via the API until the moment they dispatch.
How can I track message delivery status?
Every send returns a message_id you can query via the delivery-report endpoint, or you can configure a webhook to receive DELIVERED, FAILED, and BLOCKED events in real time. Webhooks are signed with HMAC-SHA256 so you can verify authenticity.
What kind of support do you offer?
All plans include email and WhatsApp support. Growth and above get a dedicated account manager, priority routing for support tickets, and a Slack channel shared with our engineering team for integration help.
What is the difference between promotional and transactional SMS?
Promotional SMS is marketing content sent only to non-DND numbers between 9am and 9pm IST, using a Principal Entity category DLT template. Transactional SMS (OTPs, service alerts, payment confirmations) can be delivered 24x7 to any number, including DND, when sent via an approved transactional template on a registered header.
Keep exploring the API.
See the full reference, use the five-minute quickstart, or check the product pages for DLT and sender-ID specifics.
Developer docs
Explore products
Ship your first SMS in the next 15 minutes.
Claim \u20B960 free credit when you sign up — no credit card, no commitment. Approve a DLT template, grab an API key, and start sending.