Bulk SMS Service Provider in Delhi
Send promotional SMS, transactional alerts, and OTPs to customers across Delhi and the NCR at rates starting from ₹0.15/SMS — on TRAI-compliant, DLT-registered routes built for high deliverability.
Delhi businesses rely on Duotech for
- OTP & transaction alerts for e-commerce and fintech
- Festival and retail campaigns across Delhi markets
- Real-estate project updates for NCR buyers
- WhatsApp Business API & IVR for follow-up journeys
High-quality messaging, priced for Delhi SMEs
From single-store retailers in Karol Bagh to multi-branch businesses in Nehru Place and Gurugram, Duotech delivers the same reliable delivery infrastructure with local account management.
High Deliverability
Direct operator routes with smart fallback keep messages out of spam folders.
DLT Handled For You
We manage TRAI DLT registration, headers, and content templates end to end.
Instant API
REST API with SDKs for PHP, Node.js, Java and Python — live in under an hour.
Real-Time Reports
Delivery logs, click tracking, and per-campaign analytics in your dashboard.
How Delhi businesses use bulk SMS
Practical messaging that works across the capital's key sectors.
Retail & Festive Promotions
Diwali, New Year and sale alerts to opted-in customers in your database — measured by redemption, not just delivery.
Real Estate & RERA
Project site updates, payment reminders, and launch announcements for NCR developments with compliant 17-series headers.
E-commerce OTP & Alerts
Login OTPs, order updates, and delivery confirmations for D2C brands shipping across Delhi.
Coaching & Schools
Fee reminders, exam schedules, and parent updates for coaching institutes across Delhi-NCR.
Hospitals & Clinics
Appointment reminders and health-camp notifications that cut no-shows by up to 40%.
Restaurants & Cafés
Weekend offers and loyalty messages to your regulars — cheap, instant, and personal.
Transparent per-SMS pricing, no slabs hidden in fine print
All plans include DLT registration support, dashboard access, and a free sandbox to test before you buy.
Promotional SMS
Campaign messaging to opted-in customers. Volume discounts above 100K SMS/month.
Transactional SMS
OTPs and order/transaction alerts with 99.9% uptime SLA. Most popular with Delhi businesses.
OTP Service
Priority OTP delivery with 5-second transit window and auto-fallback routing.
How DLT registration works
TRAI DLT registration is mandatory for all bulk SMS in India. We run the entire process for Delhi-NCR businesses — you just approve the details.
Business Registration
We register your business on the DLT platform and obtain your Principal Entity ID (PE ID) — the 15-digit identity every sender needs.
Header & Template Approval
We set up your 6-character sender ID (e.g. DUOTCH) and submit your content templates for TRAI approval — including Hindi and English templates for Delhi-NCR audiences. Approval typically takes 1–3 working days.
Go Live
Once templates are approved, you start sending. Transactional OTPs and alerts run 24×7; promotional SMS follow TRAI's 9 AM–9 PM window.
Frequently asked questions
Ready to send your first campaign in Delhi?
Get a free sandbox account and a tailored quote within 4 working hours. Call +91-8800722190 or start below.