🔐 OTP & TRANSACTIONAL SMS

OTPs That Arrive Before the User Looks Up

Every second an OTP takes is a customer about to abandon. Our dedicated transactional routes deliver in under 5 seconds, 24×7, DND or not — with generate-and-verify APIs and WhatsApp/voice fallback. Powered by our new platform, built and run in-house since 1998.

Try It on the New Platform → Get Enterprise Pricing

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<5s

Typical OTP delivery time

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24×7

Delivery incl. DND numbers

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Auto

WhatsApp / voice fallback

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100%

DLT-compliant templates

WHAT YOU GET

A Complete Verification Stack

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Generate & Verify API

We create the code, deliver it and verify the entry — expiry, length and resend rules configurable per app.

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Priority Routes Only

OTP traffic never queues behind marketing blasts — dedicated high-priority operator connections.

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Multi-Channel Fallback

SMS first, then WhatsApp or voice call if undelivered — completion rates your funnel will notice.

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Real-Time DLRs

Per-message delivery webhooks with failure reasons, so your app can react instantly.

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Conversion Analytics

Sent → delivered → verified funnel per app and per route, exportable for your product team.

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Security Controls

Rate limiting, IP whitelisting, key rotation and flood protection against OTP abuse and SMS pumping.

ALERTS & NOTIFICATIONS

Beyond OTPs: Every Transactional Message

The same routes carry order confirmations, payment receipts, appointment reminders, delivery updates and account alerts — any message your customer expects, delivered when they expect it.

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Order & payment confirmations with merge fields
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Banking-style alerts with strict template compliance
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Appointment & renewal reminders on schedule
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System & monitoring alerts for your ops team
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Trigger via dashboard, API or webhooks from your software

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FAQ

OTP & Transactional SMS — Frequently Asked Questions

How fast are OTPs delivered?

OTPs travel on dedicated high-priority transactional routes — typical delivery is under 5 seconds. Slow OTPs kill signups and payments, so this route quality is the core of the service.

Do OTPs deliver to DND numbers and at night?

Yes. Transactional messages (OTPs, alerts, confirmations) are permitted 24×7 and deliver to DND numbers under TRAI rules, unlike promotional SMS.

Can the platform generate and verify OTPs for me?

Yes. Our OTP API can generate the code, deliver it and verify the user's entry — with configurable length, expiry and resend limits — so you don't build any OTP logic yourself. Or send your own codes through the standard send API.

What if an SMS OTP fails to deliver?

You can enable automatic fallback: if the SMS is not delivered within your window, the OTP re-sends over WhatsApp or voice call, dramatically improving completion rates.

Is this DLT compliant?

Fully. We help register your transactional headers and OTP templates on the TRAI DLT portal, and the platform scrubs every message automatically.

Who uses this service?

Fintech and banking apps, e-commerce checkouts, SaaS logins, healthcare portals, government services — anywhere a user must be verified quickly and reliably.

VERIFY FASTER

Stop Losing Users to Slow OTPs

Test our OTP route against your current provider — free demo credits on the new platform, no commitment.

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Developers: see the SMS Gateway API.