💬 WhatsApp API @ Best Rate | Zero Setup Fee → 99.9% Uptime OTP Delivery — Try FREE Demo! 🏆 10,000+ Registered Businesses — 2,000+ Enterprise Clients Served 🚀 API Integration in Under 5 Minutes 🏅 Verified Business Badge with RCS Messaging 💬 WhatsApp API @ Best Rate | Zero Setup Fee → 99.9% Uptime OTP Delivery — Try FREE Demo! 🏆 10,000+ Registered Businesses — 2,000+ Enterprise Clients Served 🚀 API Integration in Under 5 Minutes 🏅 Verified Business Badge with RCS Messaging
DLT Registration Developers Api's
Talk to Sales: India 1800 102 1822
bulk sms call
SMSGatewayHub
Talk to us: 1800 102 1822 (Toll-Free)
Bulk SMS India · CPaaS Platform

Bulk SMS, OTP & WhatsApp API that actually arrives — in under 4 seconds

One dashboard for Bulk SMS API, OTP verification, WhatsApp Business API, RCS Messaging and Email — with multi-operator priority routing, DLT-compliant delivery and 2000 TPS throughput.

Get Free API Key → Book a Live Demo
ISO 27001 & 9001:2015 SOC 2 Compliant DLT Registered & Ready VAPT Tested
2000 TPSthroughput
99.97% uptimestatus.smsgatewayhub.com
SG
SMSGatewayHub
● Sender ID: SGHUB
Your OTP for login is 4521. Valid for 5 mins. Do not share this code.✓✓
Order #10432 has been shipped and is out for delivery today.✓✓
Hi! I'd like to know about WhatsApp API pricing.
Sure — sending you the RCS + WhatsApp bundle details right away 👍✓✓
Delivered in 3.8s
0
TPS Throughput
0s
Delivery Guarantee*
99.97%
Live Platform Uptime
5-in-1
SMS · WhatsApp · RCS · Voice · Email
Every Channel, One API

Built for Bulk SMS API, OTP & Business Messaging

Plug-and-play developer APIs across every channel your customers actually check.

Bulk SMS API

Multilingual & Unicode SMS, CSV/group broadcasts, campaign scheduling, plug-and-play REST API.

OTP SMS Provider

Multi-operator priority routing across Airtel, Vi & Smartping, plus missed-call OTP fallback.

WhatsApp Business API

Bulk WhatsApp broadcast, two-way conversations, and native CRM integrations.

RCS Messaging Solutions

Rich, branded, interactive messages with buttons, carousels and read receipts.

Voice, Missed Call & Email2SMS

Multi-channel failover so critical alerts never fail to reach a customer.

Why Businesses Choose Us

Reliability that's built in, not bolted on

DLT Compliance Ready

AI-based DLT template mapping keeps every campaign aligned with the latest TRAI regulations — automatically.

Multi-Operator Priority Routing

High-priority OTP routes across Airtel, Vi and Smartping for the fastest possible delivery, every time.

Enterprise-Grade Security

VAPT tested, SOC 2, ISO 27001 & ISO 9001:2015 certified — built for regulated industries.

Real-Time Delivery Reports

Track every message down to the click, with short-URL tracking on every outbound link.

Multi-Channel Failover

Automatic fallback across SMS, WhatsApp, RCS and Voice so your message always lands somewhere.

Pay Only for Delivered SMS

Transparent, delivery-based billing. If it doesn't land, you don't pay for it.

For Developers

Live in minutes, not sprints

1

Get your API key instantly

Sign up and receive your APIkey, Sender ID and Entity ID — no lengthy onboarding.

2

Send your first message

One plug-and-play POST request across SMS, OTP, WhatsApp, RCS or Email.

3

Track delivery in real time

Live delivery reports and click tracking, backed by 99.97% platform uptime.

POST https://www.smsgatewayhub.com/api/mt/SendSMS
{
  "Account": { "APIkey": "xxxxxxxx", "SenderId": "SGHUB", "Channel": "Trans" },
  "Messages": [{
    "Text": "Your OTP is 4521",
    "Number": "91XXXXXXXXXX"
  }]
}
● 200 OK — Delivered in 3.8s
ISO 27001
ISO 9001:2015
SOC 2
VAPT Tested
DLT Compliant
Get Started Today

Talk to Our Messaging Experts

Tell us what you're sending — OTPs, promotions, alerts — and we'll set you up with the right mix of Bulk SMS, WhatsApp API and RCS in one call.

Free API key, no credit card required
DLT template & header registration support
Dedicated onboarding & 24×7 support
FAQs

Bulk SMS API & OTP Provider — Common Questions

A Bulk SMS API lets your application send SMS — OTPs, alerts or promotions — programmatically to thousands of recipients through a single integration. SMSGatewayHub's plug-and-play REST API returns delivery status, job IDs and real-time reports for every message.

OTPs are routed with multi-operator priority across Airtel, Vi and Smartping, with a delivery guarantee of under 4 seconds on live numbers. A missed-call verification option is also available as a backup OTP method.

Yes. The platform is fully DLT registration-ready with AI-based template mapping that keeps Promotional, Transactional and Service Explicit/Implicit templates aligned with the latest TRAI TCCCPR rules.

Yes — SMSGatewayHub is a unified CPaaS platform, so Bulk SMS, WhatsApp Business API, RCS, Voice, Missed Call and Email2SMS are all managed from one dashboard with shared contact lists and reporting.

No. Billing is delivery-based — you're charged only for messages that are successfully delivered, with full transparency in your real-time delivery reports.

The platform is VAPT tested and certified ISO 27001, ISO 9001:2015 and SOC 2 compliant, meeting the security requirements of regulated industries like BFSI and healthcare.

Ready to send messages that arrive?

Bulk SMS · OTP · WhatsApp API · RCS — one dashboard, sub-4-second delivery.

Get Free API Key → Call 1800 102 1822