Bulk SMS & WhatsApp Marketing Service in Kolkata

Reach, engage, and convert customers across Kolkata with our powerful Bulk SMS & WhatsApp messaging solution. Fast, secure, and affordable for businesses of all sizes.

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10K+Happy Clients

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50K+Messages Sent Daily

Our Services

Complete SMS Solutions for Kolkata Businesses

From OTP to bulk promotional campaigns — everything to connect with your Kolkata customers.

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Promotional SMS

Run offers, sale alerts & campaigns to non-DND Kolkata customers. Perfect for retail, fashion & e-commerce brands.

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Transactional SMS

Send order confirmations, appointment reminders & alerts 24/7 — even to DND numbers. Instant delivery guaranteed.

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OTP SMS

Ultra-fast one-time passwords for logins, payments & verifications. Sub-5-second delivery to all Kolkata networks.

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WhatsApp Marketing

Reach Kolkata customers on WhatsApp with images, PDFs & interactive buttons. Higher open rates than regular SMS.

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Voice SMS

Pre-recorded voice messages in Bengali or English — great for political campaigns & event announcements in Kolkata.

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SMS API Integration

Plug our REST API into your website, CRM or ERP in minutes. Developer-friendly with full documentation & sandbox.

Industries We Serve

Trusted by Every Industry in Kolkata

From Park Street restaurants to Salt Lake IT firms — bulk SMS works for every Kolkata business.

🛍️ Retail & E-Commerce

🏥 Healthcare & Clinics

🎓 Education & Coaching

🏦 Banking & Finance

🏨 Hotels & Tourism

🏗️ Real Estate

🍽️ Restaurants & Food

💊 Pharma & Diagnostics

🚗 Automobile Dealers

👗 Fashion & Apparel

📦 Logistics & Delivery

💻 IT & Software

Why Choose Us

Why Kolkata Businesses Choose 99SMS

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Instant Delivery

Messages reach Kolkata customers in under 5 seconds via direct telecom routes — Jio, Airtel, Vi, BSNL.

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Lowest Price in Market

Starting at ₹0.09/SMS. No hidden charges, no monthly fees — pay only for what you use.

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Real-Time Reports

Track delivery, clicks & conversions from your dashboard anytime, anywhere.

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100% TRAI Compliant

DND filtering, consent management & opt-out handling built-in — fully compliant with Indian regulations.

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24/7 Support

Dedicated support via phone, WhatsApp & email — available even on weekends & holidays.

📈 Our Performance in Kolkata

SMS Delivery Rate99.9%

Client Satisfaction98%

Platform Uptime99.99%

API Success Rate99.7%

FAQ

Frequently Asked Questions

Bulk SMS service lets you send thousands of text messages simultaneously to customers in Kolkata. Upload your contact list, type your message, and our platform delivers it through direct telecom connections in seconds — for promotions, alerts, OTPs, and reminders.

Yes, bulk SMS is 100% legal in India when done through a TRAI-registered provider like 99SMSServices. We handle DND filtering, sender ID registration, and content template approval so your campaigns stay fully compliant.

Our average delivery time in Kolkata is under 5 seconds for transactional and OTP messages. Promotional messages typically deliver within 30 seconds. We connect directly to all major operators — Jio, Airtel, Vi, and BSNL.

There is no minimum order. Start with as few as 100 SMS credits. Pay-as-you-go with no monthly subscription — ideal for small businesses and startups in Kolkata.

Yes! We fully support Unicode SMS for Bengali script. Unicode SMS uses 70 characters per credit (vs 160 for English), but delivers a more personal, local feel to your Kolkata audience.

Yes! We offer a free trial with sample SMS credits — test delivery speed, dashboard features, and API integration before committing. No credit card required. Go live in under 5 minutes.