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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Complete SMS Solutions for Kolkata Businesses
From OTP to bulk promotional campaigns — everything to connect with your Kolkata customers.
Promotional SMS
Run offers, sale alerts & campaigns to non-DND Kolkata customers. Perfect for retail, fashion & e-commerce brands.
Transactional SMS
Send order confirmations, appointment reminders & alerts 24/7 — even to DND numbers. Instant delivery guaranteed.
OTP SMS
Ultra-fast one-time passwords for logins, payments & verifications. Sub-5-second delivery to all Kolkata networks.
WhatsApp Marketing
Reach Kolkata customers on WhatsApp with images, PDFs & interactive buttons. Higher open rates than regular SMS.
Voice SMS
Pre-recorded voice messages in Bengali or English — great for political campaigns & event announcements in Kolkata.
SMS API Integration
Plug our REST API into your website, CRM or ERP in minutes. Developer-friendly with full documentation & sandbox.
Trusted by Every Industry in Kolkata
From Park Street restaurants to Salt Lake IT firms — bulk SMS works for every Kolkata business.
Why Kolkata Businesses Choose 99SMS
Instant Delivery
Messages reach Kolkata customers in under 5 seconds via direct telecom routes — Jio, Airtel, Vi, BSNL.
Lowest Price in Market
Starting at ₹0.09/SMS. No hidden charges, no monthly fees — pay only for what you use.
Real-Time Reports
Track delivery, clicks & conversions from your dashboard anytime, anywhere.
100% TRAI Compliant
DND filtering, consent management & opt-out handling built-in — fully compliant with Indian regulations.
24/7 Support
Dedicated support via phone, WhatsApp & email — available even on weekends & holidays.
📈 Our Performance in Kolkata
Simple, Transparent Pricing
No contracts. No setup fees. Start small and scale as your Kolkata business grows.
- Up to 10,000 SMS/month
- Promotional & Transactional
- Real-time delivery reports
- API access included
- Email & chat support
- Up to 1,00,000 SMS/month
- Promotional, Transactional & OTP
- WhatsApp Marketing included
- Advanced analytics dashboard
- Priority WhatsApp support
- Unlimited SMS volume
- All services + Voice SMS
- Dedicated account manager
- Custom API integration
- SLA-backed 24/7 support
Ready to Grow Your Kolkata Business with SMS?
Join 5,000+ Kolkata businesses already using 99SMSServices. Setup takes less than 5 minutes.
Frequently Asked Questions