Bulk SMS Service in Kolkata
What is a bulk SMS service for businesses in Kolkata?
A bulk SMS service for Kolkata businesses delivers OTPs, payment reminders and festival offers to many phones at once through an API or panel, on DLT-registered sender IDs. Banks, publishers, retailers and traders use it to reach customers in Bengali, Hindi and English.
Why SMS works for Kolkata businesses
Kolkata has an old, dense trading and retail economy alongside newer finance and IT firms. Many customers prefer a short text over an app, and many small traders want a simple panel they can use without a developer. Bulk SMS covers both.
Bengali is the first language for most customer messages here, and Bengali text is sent as Unicode. That makes keeping each message short and plain more important than in English, where one SMS holds more characters.
Where Kolkata businesses use bulk SMS
Banks, cooperatives and finance firms
OTPs, passbook and due-date alerts, and loan reminders in Bengali and English.
Retail, publishing and wholesale trade
Offer announcements to opted-in customers, order dispatch alerts and payment follow-ups.
Schools, colleges and coaching centres
Fee, exam and result notices to students and guardians.
What you need before sending bulk SMS in Kolkata
These steps are national, so they are the same in Kolkata as anywhere in India.
Entity registration: register your business on TRAI's DLT platform. See DLT registration.
Sender ID and templates: register the header (sender ID) and each message template, including its variables, before you send.
The right message type: OTPs and account alerts are transactional; marketing is promotional and needs consent. See OTP SMS.
Consent and DND: promotional messages respect DND preferences and permitted hours. See DND compliance in India.
Send from the panel or through the SMS API, and track each message with delivery reports. Primary source: TRAI.
SMS templates in English, Bengali, Hindi
Examples only. Words in braces are variables, and every template must be registered on DLT before use. Non-English SMS is sent as Unicode, which fits fewer characters per message part.
English: Order dispatch
Dear {name}, your order {order_id} has been dispatched and will arrive by {date}. Track: {link}. - {store}
In English: A dispatch notice with delivery date and tracking link.
Bengali: Instalment reminder
আপনার ₹{amount}-এর কিস্তির শেষ তারিখ {date}।
In English: The due date for your instalment of ₹{amount} is {date}.
SMS campaign calendar for Kolkata
Festival dates change each year, so confirm them before scheduling. Promotional messages need consent and must respect DND preferences and permitted sending hours.
Durga Puja
September to October
The biggest shopping season of the year; sale previews, delivery cut-offs and store-hour notices.
Poila Boishakh
14 or 15 April
Bengali New Year greetings and offers; traders also use it for account-closing reminders.
Kali Puja and Diwali
October to November
Festival offers and service-schedule notices.
Bulk SMS questions from Kolkata businesses
Can I send Bengali bulk SMS to Kolkata customers?
Yes. Register your Bengali template on DLT and send it as Unicode. Keep the text short, because Unicode SMS holds fewer characters per message.
When should a Kolkata retailer schedule Durga Puja SMS?
Plan the schedule early, send only to customers who opted in, and respect the permitted sending hours for promotional SMS. Festival dates change each year, so confirm them first.
How much does bulk SMS cost for a business in Kolkata?
Price depends on the message type, route and monthly volume, not on the city. See SMS pricing for India or request a quote for your volume.
Is bulk SMS allowed for businesses in Kolkata?
Yes, within TRAI's rules, which apply across India. Register your entity, sender ID and templates on DLT, send promotional messages only with consent and to numbers not on DND, and keep to permitted sending hours.
Start bulk SMS in Kolkata
Tell us your use case and monthly volume, and the Teleopedia team will help with DLT setup, templates and your first campaign.