Bulk SMS Service Provider in India & Global — DLT-Compliant Bulk SMS Gateway & API
Send high-volume, DLT-compliant bulk SMS from a single platform — transactional, OTP and promotional traffic over direct operator routes to Airtel, Jio and Vi. 99%+ delivery, sub-3-second OTPs, a developer-friendly REST API and free DLT registration help across India and 190+ countries.
What is a bulk SMS service?
A bulk SMS service lets you send text messages to thousands or millions of recipients in one go — for OTPs, alerts, notifications and marketing offers. The bulk SMS gateway is the platform that carries those messages: it connects your business to mobile operators over direct routes. The bulk SMS API is the developer interface that lets your app, CRM or website trigger those sends programmatically.
In India, delivery works in a clear chain: your app or panel submits a message to the aggregator (us), we route it to the destination mobile operator (Airtel, Jio, Vi and others) over DLT-registered, TRAI-compliant routes, and the operator delivers it to the recipient’s handset — typically in sub-3 seconds for OTP traffic. Registered templates and direct binds are what keep delivery above 99%.
Our bulk SMS solutions
Pick the route that fits your traffic — all managed from a single account with unified reporting and one API.
Transactional SMS
OTPs, alerts and confirmations delivered 24×7 to any number, including DND.
Promotional SMS
Offer and campaign blasts to opt-in audiences with auto DND scrubbing.
International SMS
Global reach to 190+ countries with local-route optimisation and compliance.
Two-Way SMS
Interactive keyword campaigns and replies on long and short codes.
Incoming SMS
Dedicated numbers to receive inbound SMS, capture leads and automate flows.
Voice SMS
Automated voice broadcasts and OTP-over-call for wider reach.
WhatsApp Business API
Rich, two-way conversations and notifications on the WhatsApp channel.
API-Based Email
Transactional and bulk email over the same account for multichannel outreach.
Transactional vs promotional vs OTP SMS
Choosing the right message type — and the right DLT template — keeps your traffic compliant and delivered.
| Dimension | Transactional | Promotional | OTP |
|---|---|---|---|
| Purpose | Alerts, confirmations, account info | Offers, discounts, campaigns | One-time passwords & verification |
| Sending hours | 24×7, any time | 9 AM–9 PM IST only | 24×7, any time |
| Reaches DND | Yes | No (scrubbed) | Yes |
| DLT template type | Service / Transactional | Promotional | Service (OTP) |
| Sender ID | 6-char alphanumeric header | 6-digit numeric header | 6-char alphanumeric header |
| Delivery speed | Fast, priority route | Standard, windowed | Sub-3 seconds |
| Indicative ₹ | ₹0.14–0.20 / SMS | ₹0.10–0.16 / SMS | ₹0.14–0.25 / SMS |
Not sure which route fits? Talk to our team and we’ll map your traffic to the right templates.
Bulk SMS API & developer tools
A clean REST API with JSON, official SDKs and real-time delivery receipts — most teams are live in about 30 minutes. Send a single OTP or a million-message campaign with the same endpoint.
# Send a bulk SMS via REST API POST https://api.smsgatewayprovider.com/v1/sms Authorization: Bearer <API_KEY> Content-Type: application/json { "sender": "ABCXYZ", "template_id": "1207xxxxxxxxxxxx", "to": ["9199xxxxxxxx", "9198xxxxxxxx"], "message": "Your OTP is 4821. Valid 10 min.", "dlr_webhook": "https://yourapp.com/dlr" }
- REST API & SMPP — JSON over HTTPS, plus SMPP binds for high throughput.
- Official SDKs for PHP, Python, Node.js, Java and .NET.
- Webhooks & DLR — real-time delivery receipts pushed to your endpoint.
- Sandbox & test credits to validate integration before going live.
- Plugins for WooCommerce, WordPress and popular CRMs.
- 99.9% uptime with redundant, load-balanced infrastructure.
How it works — get started in 5 steps
Sign up
Create your free account and grab test credits.
DLT entity
We onboard your business as a Principal Entity on the DLT platform.
Sender ID + template
Register your header and get message templates approved.
Integrate
Connect via API or send straight from the web panel.
Send & track
Launch and watch real-time delivery and DLR analytics.
DLT registration & compliance
TRAI’s TCCCPR rules require every commercial sender to register on a DLT platform. We handle each step so your bulk SMS delivers without blocks or penalties — free DLT registration assistance is included.
1. Principal Entity
Register your business (PAN, GST, KYC) as a Principal Entity to get an entity ID.
2. Sender ID / header
Register a 6-character alphanumeric or 6-digit numeric header for your traffic.
3. Template approval
Pre-register message templates with variable placeholders in the right category.
4. DND / consent
Promotional traffic is auto-scrubbed against DND; transactional and OTP reach all numbers.
We handle it all — see DLT registration & support.
Bulk SMS pricing in India
Volume-based pricing with no setup fees — the more you send, the lower your per-SMS rate. Prices below are indicative domestic rates; add 18% GST.
| Monthly volume | Indicative rate / SMS | Notes |
|---|---|---|
| Up to 25,000 | ₹0.18 | Entry volume, all routes |
| 25,000 – 1 lakh | ₹0.16 | Growing businesses |
| 1 lakh – 5 lakh | ₹0.14 | High-volume senders |
| 5 lakh+ | from ₹0.10 | Enterprise & custom routes |
All plans include free DLT assistance, delivery reports and 24×7 support. No setup fees. See full pricing.
Bulk SMS use cases by industry
E-commerce
Order confirmations, shipping updates, OTPs and flash-sale campaigns.
BFSI & fintech
Secure OTPs, transaction alerts, EMI reminders and KYC notifications.
Healthcare
Appointment reminders, report-ready alerts and health-camp invites.
Education
Admission alerts, fee reminders, results and attendance notifications.
Logistics & travel
Dispatch, tracking, delivery-OTP and booking-status updates.
Real estate
New listings, site-visit invites, payment reminders and price-drop alerts.
A bulk SMS partner built for deliverability
Trusted by 5,000+ businesses across India and 190+ countries, with 15+ years in messaging — direct operator routes, honest compliance and the reporting to prove your ROI.
99%+ delivery
Direct binds with Airtel, Jio and Vi keep delivery high on registered templates.
Sub-3s OTP
Priority OTP routing delivers verification codes in under three seconds.
DLT done for you
Entity, sender ID and template approvals handled end to end — free.
24×7 support
Human support any time, plus free trial credits to test before you scale.
