Secure OTP Deliveryvia KakaoTalk
Send verification codes instantly to Korean users through KakaoTalk. Simple API, reliable delivery, and seamless integration for your apps.
Trusted by developers in Korea
Why developers choose K-OTP
Powerful KakaoTalk integration, enterprise security, and developer-friendly APIs make K-OTP the best choice for OTP delivery in Korea.
KakaoTalk. Native integration with Korea's most trusted messaging platform.
Send OTP codes directly through KakaoTalk for maximum delivery rates and user trust. No SMS fees, no carrier issues.
KakaoTalk messages have the highest delivery success rate in Korea, ensuring your OTPs always reach users.
Messages appear instantly in users' KakaoTalk, faster than SMS and more reliable than email.
No SMS fees or carrier charges. Pay only for successful deliveries with our credit-based pricing.
Security. Enterprise-grade security for your authentication needs.
Built with security best practices to protect your users and comply with Korean data protection standards.
All OTP codes are encrypted end-to-end using industry-standard AES-256 encryption.
OTP codes automatically expire after a configurable time period to prevent unauthorized access.
Built-in protection against brute force attacks and abuse with intelligent rate limiting.
Developer API. Simple, powerful API designed for developers.
Integrate K-OTP into your application with just a few lines of code. RESTful API with comprehensive documentation.
Simple REST API endpoints that can be integrated into any application in minutes.
Get instant feedback on delivery status and user interactions with webhook support.
Comprehensive delivery reports and analytics to monitor your OTP performance.
Credit-based pricing
Pay only for successful OTP deliveries. Start with 1,000 free credits, then buy more as needed.
Starter
- 1,000 base OTP messages
- + 1,000 bonus messages (limited time)
- Pay-per-use pricing
- Priority email support
- Delivery analytics
- Webhook notifications
Professional
- 100,000 OTP messages
- Lower per-message cost
- 24/7 priority support
- Advanced analytics
- Custom rate limits
- Dedicated support channel
Enterprise
- 1,000,000 OTP messages
- Best per-message pricing
- Dedicated account manager
- SLA guarantees
- Custom integrations
- White-glove onboarding
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How does K-OTP work?
K-OTP sends verification codes through KakaoTalk using simple API calls. Just integrate our endpoints, and we'll handle the secure delivery to your users' KakaoTalk accounts.
What are credits and how do they work?
Credits are our pay-per-use pricing model. 1 credit = 1 OTP successfully delivered. You start with 100 free credits, then purchase more as needed. Credits never expire.
Is KakaoTalk OTP secure?
Yes, all OTP codes are encrypted end-to-end with AES-256 encryption. Codes have configurable expiry times and we include rate limiting to prevent abuse.
Do I need a KakaoTalk Business account?
No, K-OTP handles all KakaoTalk integration for you. Your users just need regular KakaoTalk accounts to receive OTPs.
What's the delivery success rate?
KakaoTalk has a 99.9% delivery success rate in Korea, significantly higher than SMS. Messages are delivered instantly and users are immediately notified.
Can I track OTP delivery status?
Yes, our API provides real-time delivery status and comprehensive analytics. You can monitor delivery rates, response times, and user engagement through our dashboard.
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