OTP SMS & API Services – Secure, Instant, and Reliable Authentication with Ozone SMS
API that allows your business to integrate SMS (Short Message Service) messaging into your existing software platforms.
SMS APIs enable you to send or receive SMS messages quickly and easily through any website or application
Why Choose OTP SMS from Ozone SMS?
⚡ 3–6 Sec Delivery – Quick & reliable OTPs
🔄 High-Throughput API – Built for scale and speed
🔐 End-to-End Encryption – Secure communication
📶 99.9% Uptime – For seamless user experience
🕒 24×7 Availability – Across all networks
Instant OTP Delivery
Deliver OTPs within 3-6 seconds with our high-speed infrastructure.
Transactional SMS Route
OTP SMS are sent via DND-friendly Transactional Route, ensuring 24×7 delivery.
6-Digit or Custom OTP Length
Choose the format, length, and expiry time of the OTP as per your requirement.
Secure OTP Generation
System-generated OTP with advanced algorithms to ensure uniqueness and security.
Retry Mechanism
Automatically resend OTP if not delivered within set time using fallback routing.
Frequently asked questions
OTP SMS is used to verify the identity of users through a unique code during logins, transactions, or sensitive operations.
Yes! OTPs are delivered through Transactional Route, so they reach all numbers including those on DND.
We ensure OTP delivery in 3 to 6 seconds using high-priority routes.
Absolutely. We provide developer-friendly APIs with full documentation and code examples.
Yes, you can personalize the message content and define OTP length, expiry time, etc.
📞 Get in Touch
Have questions or need a customized communication solution? Our team is here to help!
Reach out to us for expert support, product demos, or partnership inquiries—let’s build smarter connections together.