Bulk SMS Service Provider in Chennai, Tamil Nadu

Q: Do you serve businesses across Chennai?

Yes. SmsHorizon serves companies across Chennai, from IT firms on the OMR corridor and auto and manufacturing units in Ambattur, Sriperumbudur and Oragadam to hospitals, banks and retail in T. Nagar, plus the wider Tamil Nadu region. We have been in business since 2011. Reach us on +91 8870-522-522 or via our contact page.

Q: Can I send SMS in Tamil?

Yes. We support full Tamil Unicode, so you can send messages in Tamil to your customers across Chennai and Tamil Nadu. Set the message type to Unicode in the panel or pass uni in the API.

Q: Is your API built for high-volume OTP and 2FA?

Yes. Our HTTP and SMPP APIs are built for the high throughput that Chennai's IT, e-commerce and banking companies need, with priority transactional routing, sub-3-second OTP delivery and detailed delivery reports.

Q: How quickly can a Chennai business go live?

Typically 3 to 5 days. Most of that time is the DLT registration and sender ID approval, which we handle for you. Once those clear, your account is ready and you can send your first campaign or wire up the API right away.

Q: Do you help with DLT registration?

Yes, free of charge. TRAI requires entity, header and template registration on the DLT portal for all commercial SMS. Our team walks you through the entire process and handles the paperwork.

Q: Can I pay locally and get a GST invoice?

Yes. Pay by UPI, card, netbanking or bank transfer, and we issue a GST invoice for every payment, with the same transparent pay-as-you-go pricing we offer everywhere.

Q: How much does bulk SMS cost in Chennai?

Bulk SMS is pay-as-you-go: you pay per message and the rate falls as your volume grows, with no setup fee or monthly rental. Transactional, OTP and promotional routes are each priced per SMS, and a longer message counts as more than one SMS. See our pricing page for current rates.

Q: Which mobile networks do you cover in Chennai?

We deliver across every major network, including Jio, Airtel, Vi and BSNL, over direct operator routes. Transactional and OTP messages reach all numbers, including DND, while promotional sends follow TRAI's DND rules and the 10am to 9pm window.

SMS for the capital of Tamil Nadu

Chennai pairs a major IT and software base along the OMR and Sholinganallur corridor with one of India's largest automobile and manufacturing belts around Guindy, Ambattur, Sriperumbudur and Oragadam. It also carries deep strength in healthcare, banking and retail.

Each of these runs on timely messaging: OTP logins, dispatch and supply-chain alerts, appointment reminders and transaction notifications. From Tidel Park software teams to Ennore and Manali port and industrial units, the need is the same, fast and reliable delivery.

SmsHorizon has delivered exactly that kind of messaging since 2011, for 3,000+ businesses across India, in Tamil or English.

Why Chennai businesses choose SmsHorizon

Tamil language support: Send SMS in Tamil with full Unicode, alongside English.
High-throughput API: HTTP and SMPP APIs for the OTP and alert volumes IT, e-commerce and banks push.
Priority transactional routing: Sub-3-second OTP and transaction-alert delivery on direct telco connections.
DLT done for you: Free help with entity, header and template registration on the TRAI DLT portal.
Transparent pricing: Pay-as-you-go rates, volume discounts and a GST invoice with every payment.
Reliable delivery: 99.9% uptime with real-time delivery reports and webhooks.

Transactional, promotional and OTP SMS in Chennai

Transactional SMS carries the OTPs, transaction confirmations and alerts your customers expect, at the highest priority, day or night. See transactional SMS.

Promotional SMS reaches your customer base with offers and launches within TRAI's daytime window, in Tamil or English. See promotional SMS.

OTP and high-volume alert traffic runs through our SMS API. Every route is DLT-compliant and registered with TRAI under the TCCCPR rules, and deliverable across Jio, Airtel, Vi and BSNL.

	Transactional SMS	Promotional SMS
Used for	OTPs, alerts, confirmations	Offers, campaigns, launches
Delivered to	All numbers, including DND	Non-DND and opted-in numbers
Sending hours	24x7	10am to 9pm (TRAI window)
Sender ID	Branded 6-character header	Branded 6-character header

2011

In business since

3,000+

Businesses across India

<3s

Typical OTP delivery

99.9%

Delivery uptime

Use cases

How Chennai businesses use bulk SMS

From OMR software logins to factory dispatches and hospital reminders, here's how local teams put SMS to work every day.

Automotive & manufacturing

Dispatch and supply-chain alerts, dealer and workforce notifications for the auto and manufacturing belt around Guindy, Ambattur and Sriperumbudur.

IT & SaaS

Banking & fintech

Transaction alerts, payment and KYC OTPs, EMI reminders and fraud notifications on secure transactional routes.

Healthcare

Appointment reminders, report-ready alerts and OTP-based patient logins across Chennai's hospital and diagnostics networks.

E-commerce & retail

Order confirmations, COD verification, delivery updates and offer broadcasts for showrooms in T Nagar and online brands.

Logistics & ports

Dispatch updates, gate and container alerts and tracking links for freight moving through Ennore, Manali and the Chennai ports.

Platform

Everything you need to send at scale

A complete bulk SMS platform for Chennai teams, from branded sender IDs and Tamil Unicode to the panel, API and DLT templates.

Branded sender IDs

Tamil & Unicode

Send in Tamil or English with full Unicode support, set type to Unicode or pass uni in the API.

Panel & API

Send from a simple web panel or integrate the HTTP and SMPP API into your own software.

Scheduling

Queue campaigns for the right time, including festival and off-peak sends.

Delivery reports

Live delivery receipts for every message, with downloadable reports and webhooks.

Contact management

Upload and group contacts, with opt-out handling built in.

Two-way & long code

Receive replies and run keyword campaigns on a virtual long number.

DLT templates

Reusable, approved templates for OTPs, alerts and offers.

How to send bulk SMS in Chennai

Getting started takes a few days, and most of that is the one-time DLT registration, which we handle for you.

Create your free account and claim 500 trial SMS to test delivery.
Complete DLT registration for your entity, sender IDs and templates. Our team does the paperwork at no cost.
Add credits by UPI, card, netbanking or bank transfer, with a GST invoice on every payment.
Upload your contacts or connect the API to your own software.
Compose and send in Tamil or English, choose your sender ID, and track delivery in real time.

Bulk SMS pricing in Chennai

Bulk SMS is pay-as-you-go. You buy credits and pay per message, and the rate drops as your volume grows, with no setup fee and no monthly rental.

Transactional, OTP and promotional routes are each priced per SMS, and a longer message counts as more than one SMS. Every payment comes with a GST invoice.

See current rates on our pricing page, or talk to us about volume pricing for high-traffic senders.

No setup feeNo monthly rentalGST invoiceVolume discounts

FAQs

Bulk SMS in Chennai, common questions

Do you serve businesses across Chennai?

Yes. We serve companies across Chennai, from IT firms on the OMR corridor and auto and manufacturing units in Ambattur, Sriperumbudur and Oragadam to hospitals, banks and retail in T. Nagar, plus the wider Tamil Nadu region. SmsHorizon has been in business since 2011. Reach the team on +91 8870-522-522 or via our contact page.

Can I send SMS in Tamil?

Yes. We support full Tamil Unicode, so you can send messages in Tamil to your customers across Chennai and Tamil Nadu. Set the message type to Unicode in the panel or pass uni in the API.

Is your API built for high-volume OTP and 2FA?

Yes. Our HTTP and SMPP APIs are built for the high throughput that Chennai's IT, e-commerce and banking companies need, with priority transactional routing, sub-3-second OTP delivery and detailed delivery reports. See the SMS API page for details.

How quickly can a Chennai business go live?

Typically 3 to 5 days. Most of that time is the DLT registration and sender ID approval, which we handle for you. Once those clear, your account is ready and you can send your first campaign or wire up the API right away.

Do you help with DLT registration?

Yes, free of charge. TRAI requires entity, header and template registration on the DLT portal for all commercial SMS. Our team walks you through the entire process and handles the paperwork.

Can I pay locally and get a GST invoice?

Yes. Pay by UPI, card, netbanking or bank transfer, and we issue a GST invoice for every payment. See our pricing page or payment options for details.

How much does bulk SMS cost in Chennai?

Bulk SMS is pay-as-you-go: you pay per message and the rate falls as your volume grows, with no setup fee or monthly rental. Transactional, OTP and promotional routes are each priced per SMS, and a longer message counts as more than one SMS. See our pricing page for current rates.

Which mobile networks do you cover in Chennai?

We deliver across every major network, including Jio, Airtel, Vi and BSNL, over direct operator routes. Transactional and OTP messages reach all numbers, including DND, while promotional sends follow TRAI's DND rules and the 10am to 9pm window.

Service area