Bulk SMS Solutions for Kolkata Businesses
From wholesale traders in Burrabazar and jewellers in Bowbazar to IT firms in Salt Lake Sector V and hospitals along the EM Bypass, Kolkata businesses rely on SMS to reach customers who may never open an email or install an app. Every phone can receive an SMS.
As a Bulk SMS Service Provider in Kolkata, Fivo SMS keeps it simple: upload your contact list or connect through our API, choose an approved template, and send. We help with the DLT paperwork, and you can see exactly which messages were delivered.
Serving: Park Street, Esplanade, BBD Bagh, Burrabazar, Bowbazar, Salt Lake, New Town (Rajarhat), Gariahat, Ballygunge, Behala, Dum Dum and Howrah — and businesses across West Bengal.
📦 Traders & wholesalers
Price lists, stock arrivals and payment reminders to your dealer network.
💍 Retail & jewellery
Puja collections, wedding-season offers and loyalty updates.
🏥 Hospitals & diagnostics
Appointment, report-ready and billing alerts for patients.
🏦 Banks, NBFCs & microfinance
OTPs, EMI reminders and transaction alerts.
🎓 Schools & coaching centres
Admissions, exam schedules, results and fee reminders.
💻 IT & service companies
Sign-up OTPs, onboarding messages and system alerts.
DLT-Compliant SMS Services
TRAI rules require every business to register its brand, Sender ID and message templates on a DLT platform. Registration is done once and works on Jio, Airtel, Vi and BSNL. Most delays come from rejected templates — so that's where we help most.
The fixed text names the business, and only the parts that change (name, amount, invoice number) are variables. Templates like this are approved quickly.
DLT Template Registration Guide >>- Business or brand name missing from the message
- Variables replacing most of the text
- Promotional words in a transactional template
- Links or phone numbers that aren't whitelisted
- Sender ID that doesn't match the brand
We review your templates for these issues before submission, then complete the PE–TM binding so Fivo SMS can deliver them. Full DLT guide >>
Promotional and Transactional SMS
Promotional SMS for Kolkata Campaigns
For offers and announcements to people who haven't blocked marketing messages (non-DND), sent between 10:00 AM and 9:00 PM.
- Durga Puja, Poila Boishakh and wedding-season sales
- New collection and store opening announcements
- Restaurant, salon and coaching offers
Transactional SMS for Everyday Alerts
For information customers need — delivered round the clock to every number, including DND.
- Payment received and invoice alerts
- Order, dispatch and delivery updates
- Appointment and report-ready messages
Planning a Durga Puja or Poila Boishakh campaign? Get new promotional templates approved one to two weeks ahead — approvals can take a few working days. For renewals, reminders and account updates to existing customers, the service implicit route also reaches DND numbers, and service explicit lets you send offers to customers who have given recorded consent.
OTP SMS Services in Kolkata
For banks, payment apps, e-commerce stores and patient portals, a one-time password has one job: arrive before the customer gives up.
⏱ Speed
OTPs travel on priority transactional routes and typically arrive within seconds, day and night.
📶 Reach
Delivered to every network and to DND numbers, so no customer is locked out of their account.
🔄 Reliability
Check delivery status for each OTP through the API, with voice OTP on call as a fallback.
Bulk SMS API Integration
Three ways to send — pick whichever suits your team.
🖥 Web Panel
No coding needed. Upload your contact list, pick a template, schedule or send instantly and download delivery reports.
💻 HTTP / REST API
Free to use. Send SMS and OTPs from your website, app, CRM, billing or hospital software. API docs >>
⚡ SMPP
A direct connection for high-volume senders and resellers who need maximum throughput. SMPP details >>
WhatsApp Business API Services in Kolkata
SMS and WhatsApp work best together. Here's a simple way to decide which to use:
| Use SMS for | Use WhatsApp for |
|---|---|
| OTPs and login codes | Product photos and catalogues |
| Urgent alerts and reminders | Invoices, tickets and PDFs |
| Customers with basic phones | Two-way chat and support |
| Reaching every number, every network | Chatbots and quick-reply buttons |
💬 WhatsApp Business API
The official Meta platform for messaging customers at scale — templates, media, chatbots and CRM links.
View Details >>✅ Official Business Account
Show your business name on WhatsApp, with help applying for green-tick verification.
View Details >>🤖 WhatsApp Web Automation
A quick start for shops and small teams — broadcasts and automatic replies.
View Details >>Why Choose Fivo SMS as Your Bulk SMS Service Provider in Kolkata
🗣 Bengali & English
Send in the language your customers prefer, with full Unicode support.
📝 Template Approval Help
We check templates before submission, so campaigns aren't held up by rejections.
⏱ Priority OTP Routes
Fast, round-the-clock delivery for codes and critical alerts on all networks.
🖥 Easy for Any Team
A simple web panel for staff, plus a free API for developers.
💰 Honest Pricing
No setup fee, no lock-in, 18% GST shown on every invoice. See rates >>
📞 Phone & WhatsApp Support
Talk to a real person when you need help — before and after you go live.
Industries We Serve in Kolkata
FAQs — Bulk SMS Service Provider in Kolkata
Contact Fivo SMS for Bulk SMS in Kolkata
📞 Speak to Our Team
Sector 63, Noida, UP — 201301
Serving Kolkata clients by phone and online
Reach Your Kolkata Customers Today
Work with a Bulk SMS Service Provider in Kolkata that helps you get templates approved, sends in Bengali or English, and adds WhatsApp whenever you need it.
Contact Us SMS Rates WhatsApp Business APIHow Can we Partner Up?
From the very first day to the very last day, we make sure we provide you the best of our services with effective communication, skilled team members and a lot of passion for marketing. Contact Us Now.
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