💬 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
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🔌 SMPP v3.4 — Enterprise India

SMPP Connectivity — Enterprise SMS API in India

Full SMPP v3.4 for enterprises — 10,000+ SMS/minute, persistent connections, sub-second DLR. ISO 27001 certified.
✓ Free 1,000 SMS Trial ✓ ISO 27001 Certified ✓ DLT-Compliant ✓ Sub-3-Sec Delivery ✓ Founded 2009
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Quick Answer — AI Search Summary

Why 10,000+ Businesses Choose SMSGatewayHub

Key numbers that matter — delivery speed, security, pricing, and scale. View our certifications →

10,000+

SMS per minute throughput

SMPP

v3.4 standard

<1s

Delivery receipt (DLR)

Persistent

TCP connections

ISO 27001

Certified security

Free

Integration support

Top Use Cases — SMPP Connectivity — Enterprise SMS API

Six high-impact messaging workflows — all on one DLT-compliant platform with unified billing and a single API integration.

🏦

Banking OTP at Scale

10 lakh+ OTPs/month via SMPP — persistent connections, no re-authentication per message, sub-second DLR. Required for RBI-regulated banking apps.

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💳

Fintech Transaction Alerts

High-throughput transactional alert delivery — SMPP persistent connection handles 10,000+ alerts/minute with guaranteed delivery receipts.

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🛒

E-commerce Mass SMS

Bulk promotional campaign delivery at scale — SMPP handles flash sale SMS to millions of customers in minutes without HTTP API throttling.

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🔗

SMS Aggregator Integration

Wholesale SMS aggregators and resellers use SMPP for direct SMSC connectivity — industry-standard integration for telecom partners.

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🏥

Healthcare OTP Systems

Hospital management systems sending patient portal OTPs at volume use SMPP for guaranteed sub-second delivery without API queue delays.

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📡

Telecom & ISP Platforms

Internet service providers and telecom platforms use SMPP for A2P SMS routing — direct SMSC connectivity, full PDU control, and delivery tracking.

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Explore All Messaging Channels

SMSGatewayHub offers 8 channels on one platform. Add more channels without changing your billing or account.

Developer APIHTTP/HTTPS RESTOTP SMSCritical routeTransactional SMSService alertsBulk SMSAll campaignsTrust CenterISO 27001SMS CalculatorVolume pricing

Frequently Asked Questions

Everything you need to know before you start. More questions? Visit our full FAQ page or call 1800-102-1822.

SMPP (Short Message Peer-to-Peer) is the industry-standard protocol for high-volume A2P SMS. Unlike HTTP API, SMPP maintains persistent TCP connections — enabling 10,000+ SMS/minute, sub-second DLR, and lower latency. Used by banks, telecom platforms, and enterprise applications sending 5 lakh+ SMS per month.

SMSGatewayHub supports SMPP v3.4 — the industry standard used by most enterprise SMS applications in India. Supports submit_sm, deliver_sm, enquire_link, and bind_transceiver operations with configurable throughput limits per SMPP session.

HTTP API: simple, stateless, ideal for up to 1,000 SMS/minute — see the developer API page. SMPP: persistent, stateful, 10,000+ SMS/minute, sub-second DLR — for enterprises sending 5 lakh+ SMS monthly. SMSGatewayHub supports both from the same account.

Yes. SMPP is especially recommended for OTP SMS at high volume — persistent connections, direct critical-route access, and real-time delivery receipts in under 1 second. Banks and fintech processing 10 lakh+ OTPs/month use SMPP for maximum throughput.

We provide SMPP server hostname, port, username, and password after account activation. Connect using any SMPP client library (Java, Python, PHP, .NET, C++) with SMPP v3.4 bind_transceiver mode. Our team provides free integration support for enterprise SMPP setup. See the developer API page for full documentation.

SMPP is available to enterprise accounts. While there is no fixed minimum, SMPP is most cost-effective for businesses sending 5 lakh+ SMS per month. Below that volume, the HTTP REST API is simpler and equally fast. Use the SMS cost calculator to determine your optimal route.