OTP Verification Sri Lanka — secure, instant one-time passwords
Protect logins, signups and checkout with one-time password SMS delivered in seconds. SMSGo.lk gives Sri Lankan apps and stores a fast, reliable OTP SMS API across every network at LKR 0.54 per SMS — all taxes included, free API key.
Seconds to deliver
Prioritised routing means OTP codes reach Dialog, Mobitel, Hutch and Airtel numbers almost instantly.
Simple OTP API
Trigger a verification SMS with one REST call. Generate, send and verify in your own flow.
Cut fraud & fake signups
Phone verification stops bots and fake orders at registration and checkout.
2FA for logins
Add two-factor authentication to your app to keep customer accounts secure.
All networks, one rate
LKR 0.54 per SMS across every Sri Lankan network, all taxes included.
Free API key
Sign up and start sending OTPs in minutes — no setup fee, no monthly charge.
Why OTP verification matters
One-time passwords confirm that a user genuinely controls the phone number they signed up with. For Sri Lankan e-commerce, fintech and apps, OTP verification cuts fraudulent orders, blocks bot signups, and secures sensitive actions like password resets and payments.
Because SMS reaches virtually every mobile in Sri Lanka — no app or data required — OTP over SMS is the most universal way to verify your users.
Built for speed and reliability
OTP only works if it arrives fast. SMSGo.lk uses direct operator routing and prioritised delivery so verification codes land in seconds, not minutes — keeping your signup and checkout conversion high.
Integrate with a single REST API call, or use our WooCommerce plugin to add checkout verification with no code.
Frequently asked questions
How fast are OTP codes delivered?
Typically within seconds, thanks to prioritised direct routing to all Sri Lankan networks.
How much does OTP SMS cost in Sri Lanka?
LKR 0.54 per SMS, all taxes included, with no setup or monthly fee.
How do I integrate OTP verification?
Use our REST API to send the code, or our free WooCommerce plugin for no-code checkout verification.
Does OTP work on all networks?
Yes — Dialog, Mobitel, Hutch and Airtel, all at the same flat rate.
Can I use it for 2FA?
Absolutely. Send a code on login to add two-factor authentication to your app.
Add OTP verification to your app
Free account, no credit card, LKR 0.54 per SMS — all taxes included.
Get started free