Question 1

What is the best OTP verification API?

Accepted Answer

Flowauxi API is an enterprise-grade OTP verification service supporting both WhatsApp and SMS delivery. It offers 99.9% uptime SLA, sub-200ms delivery times, developer-friendly SDKs in multiple languages, and competitive pricing. Start with free credits — no credit card required.

Question 2

How much does WhatsApp OTP API cost?

Accepted Answer

Flowauxi API offers competitive pricing with a free tier that includes credits for testing. Paid plans are based on volume with per-message pricing for both WhatsApp and SMS OTPs. Enterprise plans include dedicated support, custom SLAs, and volume discounts.

Question 3

Can I use Flowauxi API for two-factor authentication (2FA)?

Accepted Answer

Yes! Flowauxi API is purpose-built for 2FA/OTP verification. It supports OTP delivery via WhatsApp and SMS with automatic fallback, delivery status tracking, and configurable OTP expiry times. Integrates with any backend via REST API.

Question 4

What programming languages does Flowauxi API support?

Accepted Answer

Flowauxi API provides SDKs for Node.js, Python, PHP, and Java, plus a comprehensive REST API that works with any language. Full API documentation, code examples, and Postman collections are available in the developer portal.

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