Messaging APIs
developers love
Lightning-fast APIs. Enterprise reliability.
Sub-50ms response times.
Send SMS, WhatsApp & RCS messages through one unified API. Built for Indian developers with transparent pricing.
Trusted by India's leading companies
Why ContactWise?
We've built the messaging platform we always wanted to use. Reliable, developer-friendly, and designed for the Indian market.
World-class Reliability
Tier-1 carrier connections with 99.99% uptime SLA. Your messages reach customers when it matters most.
Developer Euphoria
Clean REST & Webhook APIs, comprehensive SDKs, detailed docs, and Postman collections. Built by developers, for developers.
Transparent Pricing
One blended per-message rate. No hidden fees, no contracts, no commitments. Pay only for what you use.
India-centric Compliance
DLT registration, template approval flows, and consent management built-in. Stay compliant effortlessly.
Lightning Fast
Sub-100ms API response times
Expert Support
24/7 technical support team
Global Reach
Send to 200+ countries
Enterprise Security
SOC 2 Type II compliant
Calculate your savings
See how much you can save by switching to ContactWise's transparent pricing
Current Cost
ContactWise Cost
No setup fees • No contracts • Start in 5 minutes
Start coding in minutes
Clean, intuitive APIs that developers love. Send your first message in under 5 minutes.
curl -X POST https://api.contactwise.dev/v1/sms \
-H "Authorization: Bearer YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"to": "+919876543210",
"message": "Your OTP is 123456. Valid for 10 minutes.",
"sender_id": "CNTCTW",
"template_id": "otp_template_001"
}'Multiple SDKs
Node.js, Python, PHP, C#, Java, and more
Postman Collection
Ready-to-use API collection for testing
Comprehensive Docs
Detailed guides and API reference
Start sending in 5 minutes
Join thousands of developers who trust MessageFlow for their messaging needs. No setup fees, no contracts, no hassle.