Make email verification feel effortless.
Send secure six-digit codes, verify them in seconds, and keep your authentication flow simple. Qelvexa gives you the API, rate limits, quotas and dashboard you need to ship.
Verify your email
Enter the code we sent to your inbox.
A focused OTP platform, without the clutter.
Simple enough to integrate quickly, with the security and controls you expect from a production API.
Send in one request
Call one endpoint with an email address and Qelvexa handles code generation, expiry and delivery.
Verify safely
Codes are hashed at rest, expire automatically and become unusable after successful verification.
Protect your usage
Built-in quotas and rate limits help keep your API predictable and your credentials safer.
Developer dashboard
Create and revoke API keys, view usage and manage your account from one clean workspace.
Temporary login codes
Account sign-ins can use an extra email verification step before a session is created.
Clear API responses
Predictable JSON responses make it easy to handle success, validation, rate limits and errors.
From email to verified user.
A clean flow for the parts of authentication that usually become messy.
Send
Your server sends an email address to the OTP endpoint.
Deliver
Qelvexa generates a short-lived code and sends it to the recipient.
Verify
Your server submits the code and receives a clear verification result.
Designed to disappear into your stack.
Use a normal HTTPS request from your backend. Your API key stays on your server while Qelvexa handles the OTP lifecycle.
Read the full documentation →POST /api/v1/otp/send Authorization: Bearer qvx_your_api_key Content-Type: application/json { "email": "user@example.com" }
Build a smoother verification flow.
Start with the Free plan and connect your first OTP endpoint in minutes.