Bulk SMS Service Provider in Kolkata, West Bengal

Q: Do you serve businesses across Kolkata?

Yes. SmsHorizon serves companies across Kolkata, from the trading and wholesale hubs of Burrabazar to IT firms in Salt Lake Sector V and New Town, plus education, healthcare, retail and government across the city. 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 Bengali?

Yes. We support full Bengali Unicode, so you can send messages in Bengali to your customers across Kolkata and West Bengal. 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 Kolkata'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 Kolkata 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 Kolkata?

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.

Q: Which mobile networks do you cover in Kolkata?

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.

Bulk SMS service provider in Kolkata, West Bengal - SmsHorizon

SMS for eastern India's commercial gateway

Kolkata is the capital of West Bengal and the gateway to eastern India, with a deep base of banking, insurance and financial services. Its IT corridor runs through Sector V Salt Lake and New Town, Rajarhat.

Traditional industries such as jute, tea, engineering and manufacturing sit alongside a large retail, education and healthcare presence, with Howrah right across the river. Each of these depends on timely messaging, from order and dispatch alerts to OTP logins, admission and appointment reminders and campaign broadcasts.

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

Why Kolkata businesses choose SmsHorizon

Bengali language support: Send SMS in Bengali with full Unicode, alongside English
High-throughput API: HTTP and SMPP APIs for the OTP and alert volumes IT, e-commerce and banks push
Fast, reliable delivery: Sub-3-second OTPs and 99.9% uptime with real-time reports
DLT done for you: Free help with entity, header and template registration
Transparent pricing: Pay-as-you-go rates with a GST invoice on every payment

Bulk SMS coverage across Kolkata - Salt Lake, New Town, Howrah — Delivery coverage across Kolkata

Transactional, promotional and OTP SMS in Kolkata

Transactional SMS carries the OTPs, trade 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 Bengali or English. See promotional SMS.

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

Industries we serve in Kolkata

Trading, wholesale and distribution (Burrabazar)
IT, ITeS and BPO (Salt Lake Sector V, New Town)
Education, colleges and coaching institutes
Hospitals, diagnostics and healthcare
Banking, NBFCs and financial services
E-commerce, retail and showrooms
Manufacturing, jute and logistics

2011

In business since

3,000+

Businesses across India

<3s

Typical OTP delivery

99.9%

Delivery uptime

Use cases

How Kolkata businesses use bulk SMS

From wholesale order alerts to IT logins and college reminders, here's how local teams put SMS to work every day.

Trading & wholesale

Order confirmations, dispatch and payment alerts and stock updates for Burrabazar and the city's distribution trade.

IT & ITeS

OTP logins, 2FA codes and account alerts delivered through a high-throughput API with priority routing.

Education & coaching

Admission and fee reminders, exam schedules, attendance and result alerts, in Bengali or English.

Hospitals & clinics

Appointment reminders, report-ready alerts and OTP-based patient logins across the city's hospitals.

Banking & finance

Transaction alerts, payment and KYC OTPs, EMI reminders and fraud notifications with secure, fast routing.

E-commerce & retail

Order confirmations, COD verification, shipping updates and offer broadcasts to your customer base.

How to send bulk SMS in Kolkata

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 Bengali or English, choose your sender ID, and track delivery in real time.

Bulk SMS pricing in Kolkata

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 Kolkata, common questions

Do you serve businesses across Kolkata?

Yes. We serve companies across Kolkata, from the trading and wholesale hubs of Burrabazar to IT firms in Salt Lake Sector V and New Town, plus education, healthcare, retail and government across the city. 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 Bengali?

Yes. We support full Bengali Unicode, so you can send messages in Bengali to your customers across Kolkata and West Bengal. 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 Kolkata'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 Kolkata 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 Kolkata?

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 Kolkata?

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.

Statewide & east India