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SMPP SMS API for High-Volume Senders and Resellers

A fast, reliable and secure SMPP gateway for wholesale channel partners, aggregators and enterprises that need to push large volumes of SMS across India at a competitive price.

Built for resellersDelivery receiptsTRAI DLT registered99.9% uptime
Request SMPP AccountSMPP Connectivity Details
99.9%Uptime SLA
2-6 secTypical delivery
2,000+Enterprise clients
15+Years since 2009

Quick Answer

The SMSGatewayHub SMPP API is a persistent Short Message Peer-to-Peer connection to our Indian SMS gateway, built for high-volume senders and wholesale channel partners. Your SMSC client binds once and submits messages continuously, receiving delivery receipts back on the same session. SMSGatewayHub has run TRAI DLT-registered routes since 2009 with a 99.9% uptime SLA and 2-6 second typical delivery.

What is an SMPP SMS API and who needs it?

SMPP (Short Message Peer-to-Peer) is the telecom-industry protocol that SMS centres, aggregators and large enterprises use to exchange messages. Unlike a URL-based HTTP SMS API, where each request opens a new connection, SMPP keeps a long-lived session open between your platform and our gateway. That makes it the preferred choice when you are sending very high volumes, need predictable throughput, or already operate SMS software that speaks SMPP natively.

The SMSGatewayHub SMPP platform is designed for high-volume SMS users and wholesale channel partners connected to India. If you run a bulk SMS reseller business, a CPaaS product, a bank or a large e-commerce platform, SMPP gives you an alternative way to send large volumes with fast, reliable and secure delivery at a competitive price.

Our in-house team built the SMS API to be intuitive, with the reliability you need to build the best solution for your business. Our developer resources include sample code, documentation and practical tips, so you can be sending SMS in no time - whichever programming language you use.

SMPP API features

A simple, lightweight connection with everything you need to SMS-enable your business.

Automatic sending

Integrate once and your apps, websites and software send text messages automatically, at low cost.

Sender identification

Set a from address of up to 6 alpha-numeric characters, such as your brand name, approved as your DLT sender ID.

Push delivery updates

Our Push Notification service tells your app when a message is delivered, fails, or when you receive a reply.

Status on demand

Request the current status of any message at any time via the API or our web-based platform. See live delivery report states.

Multi-operator routing

Messages are routed across multiple carriers and gateways to keep delivery consistent when a network has issues.

Compliance built in

TRAI DLT registered, ISO 27001, ISO 9001:2015 and SOC 2 certified - details in our Trust Center.

SMPP vs HTTP API: which should you choose?

FactorSMPP APIHTTP / HTTPS API
ConnectionPersistent session (bind) kept openNew request per call
Best forResellers, aggregators, very high volumeWebsites, apps, CRMs, moderate volume
Delivery receiptsPushed back on the same sessionGetDelivery call, reports or webhooks
Setup effortNeeds an SMPP client and account provisioningAny language that can call a URL
Recipients per callOne message per submit, streamed continuouslyUp to 100 numbers per request

Not sure? Start on the HTTPS API and move to SMPP when your volumes grow - your DLT sender IDs and templates stay the same.

What you need to set up an SMPP connection

Connection credentials are issued by our team after your account is approved.

ItemDetails
SMPP account credentialsSystem ID and password provided by SMSGatewayHub on approval
Host and portShared with you in the SMPP onboarding document
Server IPsYour public IPs for whitelisting on our side
DLT entity IDYour principal entity registration on the DLT platform
Sender IDs (headers)Up to 6 alpha-numeric characters, registered on DLT
Content templatesDLT-approved template IDs mapped to your traffic

Read the SMPP SOP below for the full onboarding procedure.

How to get SMPP connectivity

  1. Register your account

    Create an SMSGatewayHub account and tell our team your expected volumes and use case.

  2. Complete DLT setup

    Register your entity, headers and templates; we can help through DLT registration support.

  3. Share IPs and receive credentials

    Send your server IPs for whitelisting and receive your SMPP credentials and connection details.

  4. Bind, test and go live

    Bind your SMPP client, run test traffic, verify delivery receipts and scale up.

SMPP and reseller documentation

SMPP Standard Operating Procedure

Onboarding and operating procedure for SMPP clients.

Download PDF →

Reseller User Guide

Guide to managing users and credits on the reseller panel.

Download PDF →

TRAI New Regulation

Summary of TRAI commercial communication rules.

Download PDF →

Resources for SMPP and API developers

Full connection details are on our SMPP connectivity API page. If you are evaluating providers, read why SMS resellers must comply with TRAI TLV rules and our guide to reseller options in India. Developers who prefer REST-style calls can use the HTTPS SMS API with sample code from the developer page.

Related Services & Guides

SMPP Connectivity API →

Connection details and onboarding for SMPP clients.

Bulk SMS Reseller →

White-label reseller panel with your own brand.

HTTPS SMS API →

Encrypted URL-based API with an OTP channel.

Communications API →

SMS, WhatsApp, RCS and voice behind one API.

Free SMS Gateway Developer API →

Test SMS APIs with free developer credits.

Frequently Asked Questions

SMPP is the Short Message Peer-to-Peer protocol used by SMS centres and aggregators to exchange messages over a persistent connection. The SMSGatewayHub SMPP API lets your platform bind once and stream high volumes of SMS to Indian networks, receiving delivery receipts on the same session.

SMPP suits resellers, aggregators, CPaaS platforms and enterprises sending very high volumes or already running SMPP-capable software. Most websites and apps are well served by the SMSGatewayHub HTTPS API, which is simpler to integrate.

Register an account, complete DLT registration and share your volume requirement and server IPs with our team. Once approved, SMSGatewayHub issues your SMPP credentials and connection details along with the SMPP SOP document.

Yes. Every commercial SMS to Indian numbers must carry a DLT-registered entity, header and template, regardless of whether it is sent by SMPP or HTTP. SMSGatewayHub helps you map these before going live.

The from address or sender ID can include up to 6 alpha-numeric characters, such as your company or brand name, and it must be registered on DLT.

Yes. Delivery receipts are pushed back on your SMPP session, and you can also check message status at any time through the SMSGatewayHub web platform or API.

Yes. The SMPP platform is designed for wholesale channel partners, and SMSGatewayHub also offers a white-label bulk SMS reseller panel if you prefer not to run your own SMPP software.

Ready for high-volume SMPP messaging?

Talk to SMSGatewayHub about SMPP connectivity, reseller pricing and DLT onboarding. Call 1800 102 1822 or register to start.

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